422 results on '"Kim, Sang Yeon"'
Search Results
202. Transparent and flexible haptic array actuator made with cellulose acetate for tactile sensation
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Varadan, Vijay K., Mohiuddin, Md, Kim, Hyun-Chan, Kim, Sang-Yeon, and Kim, Jaehwan
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- 2014
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203. Agglomeration of Cylindrically Condensed Cores in Si1 − xGexNanowires by Oxidation
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Kim, Sang-Yeon, Lee, Hoo-Jeong, and Ko, Dae-Hong
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Oxidation of Si1−xGex(x=0.15,0.3)nanowires was performed to examine the Ge condensation and agglomeration behaviors of the remaining Si1−yGey(yx)cores. Si1−xGexnanowires were grown in a furnace and thermally oxidized. Test results were investigated using transmission electron microscopy analysis. With the increase in oxidation time, Ge condensation occurred, after which Si1−yGeycores changed to sphere shapes. The formation of spheres was related to the reduction in the total interfacial energy between the Si1−yGeycore and the outer SiO2layer.
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- 2010
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204. Perineural Invasion Predicts Local Recurrence and Poor Survival in Laryngeal Cancer.
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Shin, Hyun-Il, Bang, Joo-In, Kim, Geun-Jeon, Sun, Dong-Il, and Kim, Sang-Yeon
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LARYNGECTOMY , *HEAD & neck cancer , *LARYNGEAL cancer , *PROGRESSION-free survival , *CANCER relapse , *OVERALL survival , *PROGNOSIS , *SQUAMOUS cell carcinoma - Abstract
(1) Background: Perineural invasion (PNI) in head and neck cancer is associated with a poor prognosis; however, the effect of PNI on the prognosis of laryngeal cancer remains under debate. This retrospective study aimed to investigate the effect of PNI in fresh or salvaged larynges on survival in patients who had undergone laryngectomy for squamous cell carcinoma. (2) Methods: This study enrolled 240 patients diagnosed with laryngeal cancer who had undergone open surgery at Seoul St. Mary's Hospital, Korea. The effects of PNI, other histopathologic factors, and treatment history on survival and recurrence patterns were assessed. (3) Results: PNI was observed in 30 of 240 patients (12.5%). PNI (HR: 3.05; 95% CI: 1.90–4.88; p = 0.01) was a significant predictor of poor 5-year disease-free survival. In fresh cases, preepiglottic invasion (HR: 2.37; 95% CI: 1.45–3.88; p = 0.01) and PNI (HR: 2.96; 95% CI: 1.62–2.96; p = 0.01) were negative prognostic factors for 5-year disease-free survival. In the salvage group, however, only PNI (HR: 2.74; 95% CI: 1.26–5.92; p = 0.01) was a significant predictor of disease-free survival. Further, PNI significantly influenced high local recurrence (HR: 5.02, 95% CI: 1.28–9.66; p = 0.02). (4) Conclusions: Independent of treatment history, PNI is a prognostic factor for poor survival and local recurrence in laryngeal cancer. [ABSTRACT FROM AUTHOR]
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- 2023
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205. Predictive Value of 18 F-Fluorodeoxyglucose Positron-Emission Tomography Metabolic and Volumetric Parameters for Systemic Metastasis in Tonsillar Cancer.
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Bang, Jooin, Park, Hye Lim, Yoo, Ie Ryung, Shin, Hyun-Il, Kim, Geun-Jeon, Sun, Dong-Il, and Kim, Sang-Yeon
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CONFIDENCE intervals , *PREDICTIVE tests , *METASTASIS , *RETROSPECTIVE studies , *RADIOPHARMACEUTICALS , *POSITRON emission tomography , *DESCRIPTIVE statistics , *DEOXY sugars , *SENSITIVITY & specificity (Statistics) , *RECEIVER operating characteristic curves , *PROPORTIONAL hazards models ,TONSIL cancer - Abstract
Simple Summary: The need to predict failure of locoregional or systemic control in tonsillar cancer is increasing. Therefore, we explored whether several 18F-fluorodeoxyglucose (FDG)-related parameters can predict metastasis. We retrospectively reviewed the medical records of 55 patients with tonsil squamous cell carcinoma who underwent pretreatment 18F-FDG positron-emission tomography/computed tomography (PET/CT) followed by primary surgery. In our cohort, the metabolic tumor volume (MTV2.5), total lesion glycolysis, and tumor-to-liver uptake ratio were higher than those of the patients without systemic metastasis. The MTV2.5 value was significantly different between the groups even when the values for the primary tumor and metastatic lymph nodes were summed. Our results will aid prognostic predictions and individualized post-treatment surveillance; additional systemic therapy should be considered for patients at high risk of disease control failure. Although the prognosis of tonsillar cancer (human papillomavirus-positive oropharyngeal squamous cell carcinoma) is improving, disease control failure (distant metastasis) still occurs in some cases. We explored whether several 18F-fluorodeoxyglucose (FDG) positron-emission tomography (PET) parameters can predict metastasis. We retrospectively reviewed the medical records of 55 patients with tonsil squamous cell carcinoma who underwent pretreatment 18F-FDG positron-emission tomography/computed tomography (PET/CT) followed by primary surgery. During the follow-up period, systemic metastases were found in 7 of the 55 patients. The most common sites were the lungs (33%), bone (22%), brain/skull base (22%), small bowel (11%), and liver (11%). Pathologically, P53 mutation was less common in patients with systemic metastasis (41.7% vs. 14.3%, p = 0.054) than without systemic metastasis. In terms of PET parameters, the metabolic tumor volume (MTV2.5) and total lesion glycolysis (TLG2.5) values were lower in the primary tumor, and higher in the metastatic lymph nodes, of human papillomavirus (HPV)-positive compared to HPV-negative patients (all p < 0.05). The MTV2.5, TLG2.5, and tumor–to–liver uptake ratio were 36.07 ± 54.24 cm3, 183.46 ± 298.62, and 4.90 ± 2.77, respectively, in the systemic metastasis group, respectively; all of these values were higher than those of the patients without systemic metastasis (all p < 0.05). The MTV2.5 value was significantly different between the groups even when the values for the primary tumor and metastatic lymph nodes were summed (53.53 ± 57.78 cm3, p = 0.036). The cut-off value, area under the curve (95% confidence interval), sensitivity, and specificity of MTV2.5 for predicting systemic metastasis were 11.250 cm3, 0.584 (0.036–0.832), 0.571, and 0.565, respectively. The MTV2.5 of metastatic lymph nodes and summed MTV2.5 values of the primary tumor and metastatic lymph nodes were significantly higher in tonsillar cancer patients with than without systemic metastases. We suggest PET/CT scanning for pre-treatment cancer work-up and post-treatment surveillance to consider additional systemic therapy in patients with a high risk of disease control failure. [ABSTRACT FROM AUTHOR]
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- 2022
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206. 1598: A synthetic LipoxinA4 analog improves radiation-induced lung injury by modulating NFκB signaling.
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Park, Sunjoo, Cui, Ronglan, Jo, Hai In, Kim, Sang Yeon, Song, Hyo Jeong, Lee, Jae Hee, Farh, Moharmed El Agamy, and Yonsei, Jaeho Cho
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LUNG injuries - Published
- 2024
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207. The Role of Friends’ Appearance and Behavior on Evaluations of Individuals on Facebook: Are We Known by the Company We Keep?
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Walther, Joseph B., Van Der Heide, Brandon, Kim, Sang-Yeon, Westerman, David, and Tong, Stephanie Tom
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SOCIAL groups , *SOCIAL networks , *INTERPERSONAL relations , *ONLINE social networks , *SOCIAL perception - Abstract
This research explores how cues deposited by social partners onto one’s online networking profile affect observers’ impressions of the profile owner. An experiment tested the relationships between both (a) what one’s associates say about a person on a social network site via “wall postings,” where friends leave public messages, and (b) the physical attractiveness of one’s associates reflected in the photos that accompany their wall postings on the attractiveness and credibility observers attribute to the target profile owner. Results indicated that profile owners’ friends’ attractiveness affected their own in an assimilative pattern. Favorable or unfavorable statements about the targets interacted with target gender: Negatively valenced messages about certain moral behaviors increased male profile owners’ perceived physical attractiveness, although they caused females to be viewed as less attractive. [ABSTRACT FROM AUTHOR]
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- 2008
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208. Automatic Pest Counting from Pheromone Trap Images Using Deep Learning Object Detectors for Matsucoccus thunbergianae Monitoring.
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Hong, Suk-Ju, Nam, Il, Kim, Sang-Yeon, Kim, Eungchan, Lee, Chang-Hyup, Ahn, Sebeom, Park, Il-Kwon, and Kim, Ghiseok
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PHEROMONE traps , *DEEP learning , *AUSTRIAN pine , *INSECT pheromones , *PESTS , *MACHINE learning , *INSECT pests - Abstract
Simple Summary: The black pine bast scale, Matsucoccus thunbergianae, is a forest pest that causes widespread damage to black pine; therefore, monitoring this pest is necessary to minimize environmental and economic losses in forests. However, monitoring insects in pheromone traps performed by humans is labor intensive and time consuming. To develop an automated monitoring system, we aimed to develop algorithms that detect and count M. thunbergianae from images of pheromone traps using deep-learning-based object detection algorithms. Object detection models based on deep learning neural networks under various conditions were trained, and the performances of detection and counting were compared and evaluated. In addition, the models were trained to detect small objects well by cropping images into multiple windows. As a result, the algorithms based on deep learning neural networks successfully detected and counted M. thunbergianae. These results showed that accurate and constant pest monitoring is possible using the artificial-intelligence-based methods we proposed. The black pine bast scale, M. thunbergianae, is a major insect pest of black pine and causes serious environmental and economic losses in forests. Therefore, it is essential to monitor the occurrence and population of M. thunbergianae, and a monitoring method using a pheromone trap is commonly employed. Because the counting of insects performed by humans in these pheromone traps is labor intensive and time consuming, this study proposes automated deep learning counting algorithms using pheromone trap images. The pheromone traps collected in the field were photographed in the laboratory, and the images were used for training, validation, and testing of the detection models. In addition, the image cropping method was applied for the successful detection of small objects in the image, considering the small size of M. thunbergianae in trap images. The detection and counting performance were evaluated and compared for a total of 16 models under eight model conditions and two cropping conditions, and a counting accuracy of 95% or more was shown in most models. This result shows that the artificial intelligence-based pest counting method proposed in this study is suitable for constant and accurate monitoring of insect pests. [ABSTRACT FROM AUTHOR]
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- 2021
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209. Application of Deep-Learning Methods to Bird Detection Using Unmanned Aerial Vehicle Imagery.
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Hong, Suk-Ju, Han, Yunhyeok, Kim, Sang-Yeon, Lee, Ah-Yeong, and Kim, Ghiseok
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BIRD ecology , *DEEP learning , *DRONE aircraft , *ANIMAL diseases , *HABITATS - Abstract
Wild birds are monitored with the important objectives of identifying their habitats and estimating the size of their populations. Especially in the case of migratory bird, they are significantly recorded during specific periods of time to forecast any possible spread of animal disease such as avian influenza. This study led to the construction of deep-learning-based object-detection models with the aid of aerial photographs collected by an unmanned aerial vehicle (UAV). The dataset containing the aerial photographs includes diverse images of birds in various bird habitats and in the vicinity of lakes and on farmland. In addition, aerial images of bird decoys are captured to achieve various bird patterns and more accurate bird information. Bird detection models such as Faster Region-based Convolutional Neural Network (R-CNN), Region-based Fully Convolutional Network (R-FCN), Single Shot MultiBox Detector (SSD), Retinanet, and You Only Look Once (YOLO) were created and the performance of all models was estimated by comparing their computing speed and average precision. The test results show Faster R-CNN to be the most accurate and YOLO to be the fastest among the models. The combined results demonstrate that the use of deep-learning-based detection methods in combination with UAV aerial imagery is fairly suitable for bird detection in various environments. [ABSTRACT FROM AUTHOR]
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- 2019
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210. Effects of an antiadhesive agent on functional recovery of the greater auricular nerve after parotidectomy: a double-blind randomized controlled trial.
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Nam, Inn-Chul, Joo, Young-Hoon, Cho, Jung-Hae, Kim, Choung-Soo, Kim, Sang-Yeon, Kim, Geun-Jeon, Park, Young-Hak, and Sun, Dong-Il
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PAROTIDECTOMY , *RANDOMIZED controlled trials , *BENIGN tumors , *NERVES - Abstract
Purpose: Periauricular sensory deficit occurs frequently after parotidectomy even in cases with preservation of the greater auricular nerve (GAN). This study was performed to evaluate the effects of antiadhesive agent in functional recovery of the GAN after parotidectomy. Methods: Ninety-eight patients undergoing partial parotidectomy for benign parotid tumors were prospectively enrolled in this multicenter, double-blind randomized controlled study and randomly assigned to either the study or control group. Antiadhesive agent was applied in the study group. The results of sensory tests (tactile, heat, and cold sensitivity) and a questionnaire on quality of life (QoL) were acquired at postoperative 1, 8, and 24 weeks after surgery. Clinical parameters, and the results of the sensory tests and the questionnaire, were compared between the two groups. Results: A total of 80 patients were finally enrolled. On sensory evaluation, tactile sensation and warm sensation in the ear lobule, and warm sensation in the mastoid area, showed significant improvement at 24 weeks postoperatively in the study group. There were no significant differences between the two groups on any questions in the QoL questionnaire, at any follow-up time point. Conclusions: Antiadhesive agents have some positive effects on functional recovery of the GAN after parotidectomy. Therefore, applying antiadhesive agents after parotidectomy can reduce discomfort in patients. [ABSTRACT FROM AUTHOR]
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- 2019
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211. Soluble siglec-5 is a novel salivary biomarker for primary Sjogren's syndrome.
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Lee, Jennifer, Lee, Jaeseon, Baek, SeungYe, Koh, Jung Hee, Kim, Ji-Won, Kim, Sang-Yeon, Chung, So-Hyang, Choi, Sun Shim, Cho, Mi-La, Kwok, Seung-Ki, Ju, Ji Hyeon, and Park, Sung-Hwan
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SYSTEMIC lupus erythematosus , *SJOGREN'S syndrome , *IMMUNOGLOBULIN G - Abstract
Despite advances in the understanding of the pathogenesis, disease-specific biomarkers have not been included in the classification criteria for Primary Sjogren's syndrome (pSS). Based on a microarray of peripheral blood mononuclear cells (PBMCs) from patients with primary Sjogren's syndrome (pSS), we aimed to investigate whether soluble sialic acid-binding immunoglobulin-like lectin (siglec)-5 in saliva might be a biomarker for pSS. The concentration of siglec-5 in saliva and sera was determined by ELISA. Clinical parameters related with pSS were obtained from pSS registry and correlation with salivary siglec-5 level was evaluated. Receiver operating curve (ROC) analysis was performed to determine cut off value. A separate validation cohort consisted of subjects with suspicious pSS was evaluated to determine the performance. The level of salivary siglec-5 was significantly higher in pSS patients (n = 170) compared with HCs (n = 25), non SS sicca patients (n = 78) or patients with systemic lupus erythematosus (SLE) (n = 43) (1346.8 [202.8–4280.0] pg/mL, 6.08 [0–134.0] pg/mL, 195 [0–947.5] pg/mL, and 0 [0–238.7] pg/mL, median [interquartile range], P < 0.001). Salivary siglec-5 level negatively correlated with salivary flow rate (spearman's rho: −0.420, P < 0.001), and positively correlated with ocular surface score (rho: 0.331, P < 0.001) and serum immunoglobulin G level (rho = 0.202, P = 0.008). In ROC analysis, area under the curve was 0.774[0.724–0.826]. With a cut off value of 400 pg/mL, sensitivity and specificity was 0.69 and 0.70 respectively. In validation cohort (45 pSS patients and 45 non SS sicca patients), sensitivity and specificity of siglec-5 was 64.4% and 77.8%, respectively. In conclusion, the level of soluble siglec-5 is significantly higher in the saliva from pSS patients, which reflects the severity of hyposalivation and ocular surface damage. This novel salivary biomarker may provide benefits for pSS diagnosis. • Soluble siglec-5 is highly expressed in the saliva of Sjogren's syndrome patients. • Saliva siglec-5 level reflects the severity of hypersecretion. • Saliva siglec-5 is a helpful diagnostic marker for Sjogren's syndrome. [ABSTRACT FROM AUTHOR]
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- 2019
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212. Nondestructive prediction of pepper seed viability using single and fusion information of hyperspectral and X-ray images.
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Hong, Suk-Ju, Park, Seongmin, Lee, Ahyeong, Kim, Sang-Yeon, Kim, Eungchan, Lee, Chang-Hyup, and Kim, Ghiseok
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SEED viability , *X-ray imaging , *INFORMATION modeling , *VEGETABLE farming , *SEED technology , *PEPPERS - Abstract
Pepper is one of the most important vegetable crops grown worldwide, and pepper fruits are consumed as vegetables and spices. Seed quality is an important factor in the production of crops, including peppers. Among the quality indicators of seeds, viability indicates whether seeds can grow into normal seedlings. In this study, hyperspectral and X-ray imaging techniques were applied to nondestructively predict the viability of pepper seeds. Various machine learning methods, including CNN-based deep learning, have been applied to evaluate single-information and information-fusion models. In addition, by modeling each criterion according to seedling conditions, it was evaluated which classification criterion can be successfully predicted. Both the X-ray and hyperspectral models showed the highest performance in classifying seed germination. The hyperspectral model showed an accuracy of 88.99% for germination prediction, which was higher than that of the X-ray model (75.33%). The ensemble-based information fusion model showed an accuracy of 92.51%, which was higher than those of single information models. Furthermore, by comparing evaluation metrics by cultivar, it was confirmed that each piece of information showed different trends depending on the condition of the seed lot. [Display omitted] • Hyperspectral and X-ray imaging techniques were used to predict pepper seed viability. • Single information models and information fusion models were applied and evaluated. • Three different criteria for binary classification according to seedling condition were used for modeling. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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213. Female sex, central lymph node metastasis and dissection are causes of globus symptom after thyroidectomy.
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Nam, Inn-Chul, Cho, Young-Jin, Bae, Ja-Sung, Lee, So-Hee, Park, Jun-Ook, Shim, Mi-Ran, Hwang, Yeon-Shin, Kim, Sang-Yeon, Joo, Young-Hoon, and Sun, Dong-Il
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THYROIDECTOMY , *THYROID gland surgery , *LYMPH node surgery , *VOICE disorder surgery , *PSYCHIATRIC diagnosis - Abstract
Globus symptoms are not uncommon after an uncomplicated thyroidectomy. However, their associated factors and etiology have not been investigated. We investigated the etiology and factors related to globus symptoms after thyroidectomy. The medical records of 289 patients who underwent thyroidectomy and completed a voice analysis, psychiatric screening, and voice-related questionnaires before and 1 month after the surgery were reviewed. Patients were excluded if they had globus symptoms before surgery or scored high on the psychiatric questionnaire. The selected patients were divided into two groups according to development of globus symptoms after surgery. Clinicopathological parameters and results of the voice analysis and voice-related questionnaires were compared between the two groups. A total of 157 patients were enrolled, and more than half (80/155, 51 %) showed development of globus symptoms 1 month after thyroidectomy. Female patients [hazard ratio (HR), 2.605; P = 0.010], patients who had central lymph node metastasis (HR, 3.533; P = 0.001), and patients who underwent central neck dissection (HR, 3.652; P = 0.014) had a higher probability of developing globus symptoms. Patients who developed globus symptoms scored higher on the voice-related questionnaire, and had a greater decrease in speaking fundamental frequency ( P < 0.001). Globus symptoms developed after 1 month in more than half of patients who underwent thyroidectomy. Female sex and central lymph node metastasis and dissection increased the possibility of developing the symptoms. [ABSTRACT FROM AUTHOR]
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- 2016
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214. Transoral endoscopic thyroidectomy using a self-retaining retractor as an alternative to carbon dioxide gas insufflation: A comparative analysis of 131 cases.
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Park, Jun-Ook, Lee, Dong-hyun, Kim, Mi Ra, Kim, Sang-Yeon, Han, Jae Hong, and Sun, Dong-Il
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INSUFFLATION , *SURGICAL margin , *CARBON dioxide , *THYROIDECTOMY , *ENDOSCOPIC surgery , *SUBCUTANEOUS emphysema - Abstract
Although transoral endoscopic thyroid surgery affords several advantages, the use of carbon dioxide (CO2) gas to create and maintain the working space may cause complications such as subcutaneous emphysema and a CO2 embolism. We have used a self-retaining retractor as an alternative to CO2 gas insufflation for some time; we here report its feasibility and safety. We reviewed the medical records of 131 patients who underwent transoral endoscopic thyroid lobectomy; we compared the "CO2 group" and the "retractor" group. All thyroid tumors were completely removed with negative surgical margins. No major complication occurred in the retractor group. Two major events occurred in the CO2 group: one case of permanent vocal cord palsy and one CO2 embolism. Significant subcutaneous emphysema of the neck and chest were noted in 17.7% of CO2 group patients, but in no retractor group patient. Wound infection occurred in one patient in each group but improved after appropriate management. The total operation times from incision to suture did not differ significantly between the two groups (p = 0.514). Transoral endoscopic thyroidectomy using a self-retaining retractor as an alternative to CO2 gas insufflation is feasible and safe. The superiority of transoral endoscopic thyroidectomy would be emphasized by avoiding CO2 gas insufflation, thus eliminating the risk of CO2 gas-related complications. [ABSTRACT FROM AUTHOR]
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- 2021
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215. Can Voice Pitch Be Preserved in Patients after Transoral Endoscopic Thyroidectomy Vestibular Approach?
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Kim, Mi Ra, Park, Yeong Jun, Park, Byung Whoo, Suh, Taekyung, Kim, Sang-Yeon, Moon, Tae Hoon, Lee, Dong Hyun, and Park, Jun-Ook
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THYROIDECTOMY , *VOICE analysis , *THYROID gland , *STATISTICAL significance - Abstract
Introduction: Transoral endoscopic thyroidectomy vestibular approach (TOETVA) has become increasingly popular. Several reports have emphasized the safety and efficacy of this new approach. However, there is no report on functional voice outcomes, including voice pitch change after TOETVA. Methods: The functional voice outcomes of patients undergoing TOETVA were compared with those of patients undergoing conventional thyroidectomy. A total of 82 consecutive patients were included in the study: 44 underwent thyroid lobectomy via TOETVA (transoral group) and 38 underwent thyroid lobectomy via the classic cervical approach (open group). Thyroidectomy-related voice questionnaire (TVQ), perceptual voice analysis, fiberoptic laryngoscopic and videolaryngostroboscopic examinations, and acoustic analysis were carried out before and one month after surgery. The changes in these values after surgery and the differences between the transoral and open groups were analyzed. Results: We found no significant postoperative change in voice workups in either group. The mean high pitch decreased (from 367.91 ± 120.98 to 325.80 ± 100.86 Hz, p = 0.069) in the transoral group, but statistical significance was not attained. Clinically significant changes in pitch (postoperative change in speaking fundamental frequency, ΔSFF ≥ 12) after surgery were evident in seven (15.91%) patients in the transoral group and eight (21.05%) patients in the open group without significant difference (p = 0.579). Conclusions: This is the first study to assess functional voice outcomes (including pitch) after TOETVA compared with conventional open surgery. TOETVA was associated with good voice outcomes without any significant drop in pitch. [ABSTRACT FROM AUTHOR]
- Published
- 2020
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216. Acute cerebral infarction in a patient with Paget`s disease.
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Kang YE, Kim SY, Lee SJ, Shin BS, and Kang HG
- Abstract
Competing Interests: Declarations Ethics approval This study was approved by the Institutional Review Board of Jeonbuk National University Hospital. The requirement for informed consent was waived due to the retrospective nature of the study. Competing Interests The authors declare no conflict of interest.
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- 2024
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217. Prognostic Implications of Occult Nodal Metastases in Patients with Clinically N0 Primary Parotid Gland Cancer.
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Bang J, Lee OH, Kim GJ, Sun DI, and Kim SY
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- Humans, Male, Female, Middle Aged, Retrospective Studies, Aged, Prognosis, Adult, Disease-Free Survival, Lymph Nodes pathology, Lymph Nodes surgery, Aged, 80 and over, Parotid Gland surgery, Parotid Gland pathology, Survival Analysis, Parotid Neoplasms surgery, Parotid Neoplasms mortality, Parotid Neoplasms pathology, Lymphatic Metastasis
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Background and Objectives: The role of occult nodal metastases in patients with parotid gland cancers remains unclear; such metastases are histologically diverse and exhibit unpredictable clinical courses. Here, we evaluated the prognostic utilities of such metastases, including metastases in the intraparenchymal lymph nodes (PARs). Materials and Methods: We retrospectively reviewed the medical charts of patients who underwent surgery to treat clinically N0 primary parotid gland cancers from 2000 to 2022. The primary outcome variables were 5-year overall survival (OS) and 5-year disease-free survival (DFS). We explored the effects of occult nodal metastases, including metastases in the PARs, especially in terms of the pathological T (pT) classification. Results: Among 74 patients, 48 (64.8%) were pT1/2 cases, and 26 (35.2%) were pT3/4 cases. Both perineural and lymphatic invasion were negatively associated with the 5-year DFS (hazard ratio [HR] = 3.533, 95% confidence interval [CI] = 1.325-9.421, p = 0.012; HR = 4.028, 95% CI = 1.497-10.839, p = 0.006, respectively). During pathological review, PAR metastases were observed in 12 patients (16.2%), and other occult metastases were present in 8 patients (10.8%). PAR metastases reduced the 5-year DFS in pT1/2 cases (87.2% vs. 22.2%, p = 0.001) but not in pT3/4 cases. Conclusions: PAR metastases significantly reduced the 5-year DFS in patients with clinically N0 primary parotid gland cancer. On subgroup analysis according to pT classification, this effect was significant among patients with early pT1/2 status but not patients with advanced pT3/4 status.
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- 2024
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218. Impact of contralateral occult neck metastasis in HPV-associated tonsil cancer: Is elective contralateral neck dissection required?
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Kim GJ, Bang J, Lee OH, Kim SY, and Sun DI
- Abstract
Background: Contralateral elective neck dissection in human papillomavirus (HPV)- associated tonsil cancer is a matter of debate., Objectives: The aim of this study was to analyze rates of contralateral lymph node (LN) metastasis and their prognostic effects on HPV-associated tonsil cancer. We also assessed the necessity of elective contralateral neck dissection., Methods: To investigate the pathologic incidence of and risk factors for contralateral nodal disease in HPV-associated tonsil cancer treated with upfront primary surgery and bilateral neck dissection, the records of 68 patients were reviewed., Results: Six (8.8%) patients displayed pathologic contralateral nodal disease; four of the patients had LN metastasis confirmed in contralateral level II, one patient had LN metastasis in level III, and one patient had multi-level metastasis in contralateral levels II and III. Contralateral LN metastasis showed a significant association with greater depth of invasion (DOI) in primary tumor (p = 0.032), count of positive LN (p = 0.008), and positive LN ratio of the ipsilateral neck (p = 0.01). Patients with contralateral LN metastasis showed a significantly worse five-year overall survival but no significant difference in disease-free survival., Conclusion: HPV-associated tonsil cancer has exceedingly low rates of occult contralateral LN metastasis. However, in cases of ipsilateral multiple node metastases and higher DOI, it may be worth considering elective contralateral neck dissection based on the risk of occult metastasis., Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2024 Elsevier Masson SAS. All rights reserved.)
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- 2024
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219. Clinical outcome of salvage surgery in patients with recurrent oral cavity cancer: A systematic review and meta-analysis.
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Lee OH, Bang J, Kim GJ, Sun DI, and Kim SY
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- Humans, Prognosis, Survival Rate, Treatment Outcome, Mouth Neoplasms surgery, Mouth Neoplasms mortality, Mouth Neoplasms pathology, Neoplasm Recurrence, Local mortality, Neoplasm Recurrence, Local surgery, Salvage Therapy methods, Salvage Therapy statistics & numerical data
- Abstract
This systematic review and meta-analysis investigated the impact of salvage surgery on 5-year overall survival (OS) and prognostic factors in recurrent oral cavity cancer (rOCC) patients. Relevant literature before May 2022 was reviewed, including retrospective cohort studies and observational studies comparing salvage surgery to other treatments. Risk-of-bias assessments were conducted using the Newcastle-Ottawa scale. Statistical and subgroup analyses assessed the impact of salvage surgery on 5-year OS and prognostic factors. 3036 documents were initially retrieved, with 14 retrospective cohort studies (2069 participants) included. Meta-analysis of 5-year OS in salvage surgery patients yielded a rate of 43.0%. Subgroup analysis showed higher OS in Asians (49.9% vs. 36.9%, p = 0.003) and late-relapse (63.8% vs. 30.0%, p = 0.004) groups. Prognostic factors revealed hazards associated with nodal recurrence, extranodal extension, and perineural invasion. Salvage surgery is a viable option for rOCC patients, showing favorable 5-year OS outcomes. Low publication bias enhances study reliability, but its single-arm design limits conclusions on salvage surgery superiority over other treatments., (© 2024 Wiley Periodicals LLC.)
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- 2024
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220. MicroRNA-Targeted Gene Regulation in Salivary Gland Tissue of De Novo Parkinson's Disease Patients.
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Choi KE, Kim SY, Jang J, Ryu DW, Oh Y, and Kim JS
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Although α-synucleinopathy has been confirmed in the submandibular gland (SMG) tissue of Parkinson's disease (PD) patients, in-depth disease-related molecular research, such as tissue-specific transcriptional signals, has not been performed. In the present study, disease-relevant tissue-specific transcriptional signals in SMG tissue from PD patients were investigated to identify potential diagnostic, prognostic, and pathophysiologic biomarkers. Here, seven de novo drug-naïve PD patients and six age- and sex-matched individuals without neurological or psychological diseases were enrolled. Total RNA sequencing (RNA-seq) and total small RNA-seq (smRNA-seq) were performed on SMG tissue and blood samples, with 26 RNA-seq and 26 smRNA-seq samples used for the final analysis. Differentially expressed genes (DEGs) and microRNAs in SMG tissue and blood from PD patients were obtained and their functional integration and interaction network were analyzed. The Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analysis revealed that the DEGs interacted with cytokine-, inflammation-, and immune-related pathways. Synphilin-1 expression was significantly downregulated in SMG tissue of PD patients, and α-synuclein expression did not significantly differ between PD patients and controls in either SMG tissue or blood. Fifteen tissue-specific miRNA signals in SMG tissue were identified that showed better diagnostic ability compared with those in blood samples. The correlation between DEGs and environmental factors appeared altered in PD patients. The results indicated the DEGs and microRNA signatures identified in SMG tissue may be promising diagnostic and prognostic biomarkers. These molecular insights offer potential avenues for the development of novel therapeutic strategies targeting the underlying disease mechanisms in PD patients., (© 2024. The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.)
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- 2024
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221. Assessment of oncologic and cosmetic outcomes of robotic elective neck dissection in early-stage tongue cancer.
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Kim GJ, Shin HI, Bang J, Sun DI, and Kim SY
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- Humans, Male, Female, Middle Aged, Retrospective Studies, Adult, Aged, Elective Surgical Procedures methods, Operative Time, Treatment Outcome, Neck Dissection methods, Tongue Neoplasms surgery, Tongue Neoplasms pathology, Robotic Surgical Procedures methods, Carcinoma, Squamous Cell surgery, Carcinoma, Squamous Cell pathology, Neoplasm Staging
- Abstract
Background: Robotic neck dissection is emerging as an alternative to conventional open neck dissection. However, the oncologic safety of robotic elective neck dissection (END) and its indications in early-stage tongue cancer are unclear., Methods: We retrospectively reviewed the data of 78 patients who underwent transoral excision for T1, T2 squamous cell carcinoma of tongue with simultaneous ipsilateral END. Patients were assigned to two groups: the robotic group (n = 32)-postauricular face-lift -and the conventional group (n = 46)- transcervical incision. We compared the survival, clinical, pathologic and cosmetic outcomes of the two groups, and evaluated the number of retrieved lymph nodes and robot console time in the robotic group., Results: The mean age was lower in the robotic group (43.6 ± 12.8 vs. 55.8 ± 14.0, p < 0.001) and the conventional group had more T2 patients (p = 0.01). The mean operation time was significantly longer in the robotic group than the conventional group (178.81 ± 33.9 vs. 92.28 ± 16.7, p < 0.001). The mean number of retrieved lymph nodes was not significantly different between the two groups (19.22 ± 8.51 vs. 20.7 ± 11.4, p = 0.41). The 5-year disease-free survival rate was not significantly different between the two groups (93.6 % vs. 82.9 %, p = 0.59). Overall scar satisfaction assessed by VAS score, the robotic group showed significantly better results compared to the conventional group (8.38 vs. 5.86, p = 0.033)., Conclusion: Robotic END by a postauricular facelift approach is a feasible and safe approach for early-stage tongue cancer., Competing Interests: Declaration of competing interest None., (Copyright © 2024 Elsevier Ltd, BASO ~ The Association for Cancer Surgery, and the European Society of Surgical Oncology. All rights reserved.)
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- 2024
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222. Deep learning-based multimodal segmentation of oropharyngeal squamous cell carcinoma on CT and MRI using self-configuring nnU-Net.
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Choi Y, Bang J, Kim SY, Seo M, and Jang J
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- Humans, Retrospective Studies, Male, Female, Middle Aged, Aged, Reproducibility of Results, Carcinoma, Squamous Cell diagnostic imaging, Multimodal Imaging methods, Adult, Image Interpretation, Computer-Assisted methods, Deep Learning, Magnetic Resonance Imaging methods, Oropharyngeal Neoplasms diagnostic imaging, Tomography, X-Ray Computed methods
- Abstract
Purpose: To evaluate deep learning-based segmentation models for oropharyngeal squamous cell carcinoma (OPSCC) using CT and MRI with nnU-Net., Methods: This single-center retrospective study included 91 patients with OPSCC. The patients were grouped into the development (n = 56), test 1 (n = 13), and test 2 (n = 22) cohorts. In the development cohort, OPSCC was manually segmented on CT, MR, and co-registered CT-MR images, which served as the ground truth. The multimodal and multichannel input images were then trained using a self-configuring nnU-Net. For evaluation metrics, dice similarity coefficient (DSC) and mean Hausdorff distance (HD) were calculated for test cohorts. Pearson's correlation and Bland-Altman analyses were performed between ground truth and prediction volumes. Intraclass correlation coefficients (ICCs) of radiomic features were calculated for reproducibility assessment., Results: All models achieved robust segmentation performances with DSC of 0.64 ± 0.33 (CT), 0.67 ± 0.27 (MR), and 0.65 ± 0.29 (CT-MR) in test cohort 1 and 0.57 ± 0.31 (CT), 0.77 ± 0.08 (MR), and 0.73 ± 0.18 (CT-MR) in test cohort 2. No significant differences were found in DSC among the models. HD of CT-MR (1.57 ± 1.06 mm) and MR models (1.36 ± 0.61 mm) were significantly lower than that of the CT model (3.48 ± 5.0 mm) (p = 0.037 and p = 0.014, respectively). The correlation coefficients between the ground truth and prediction volumes for CT, MR, and CT-MR models were 0.88, 0.93, and 0.9, respectively. MR models demonstrated excellent mean ICCs of radiomic features (0.91-0.93)., Conclusion: The self-configuring nnU-Net demonstrated reliable and accurate segmentation of OPSCC on CT and MRI. The multimodal CT-MR model showed promising results for the simultaneous segmentation on CT and MRI., Clinical Relevance Statement: Deep learning-based automatic detection and segmentation of oropharyngeal squamous cell carcinoma on pre-treatment CT and MRI would facilitate radiologic response assessment and radiotherapy planning., Key Points: • The nnU-Net framework produced a reliable and accurate segmentation of OPSCC on CT and MRI. • MR and CT-MR models showed higher DSC and lower Hausdorff distance than the CT model. • Correlation coefficients between the ground truth and predicted segmentation volumes were high in all the three models., (© 2024. The Author(s), under exclusive licence to European Society of Radiology.)
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- 2024
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223. Transcriptional Changes in Radiation-Induced Lung Injury: A Comparative Analysis of Two Radiation Doses for Preclinical Research.
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Farh ME, Kim HJ, Kim SY, Lee JH, Lee H, Cui R, Han S, Kim DW, Park S, Lee YJ, Lee YS, Sohn I, and Cho J
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- Animals, Inflammation, Interferon-gamma genetics, Lung, Radiation Dosage, Lung Injury genetics, Radiation Injuries, Pulmonary Fibrosis genetics
- Abstract
In a recent stereotactic body radiation therapy animal model, radiation pneumonitis and radiation pulmonary fibrosis were observed at around 2 and 6 weeks, respectively. However, the molecular signature of this model remains unclear. This study aimed to examine the molecular characteristics at these two stages using RNA-seq analysis. Transcriptomic profiling revealed distinct transcriptional patterns for each stage. Inflammatory response and immune cell activation were involved in both stages. Cell cycle processes and response to type II interferons were observed during the inflammation stage. Extracellular matrix organization and immunoglobulin production were noted during the fibrosis stage. To investigate the impact of a 10 Gy difference on fibrosis progression, doses of 45, 55, and 65 Gy were tested. A dose of 65 Gy was selected and compared with 75 Gy. The 65 Gy dose induced inflammation and fibrosis as well as the 75 Gy dose, but with reduced lung damage, fewer inflammatory cells, and decreased collagen deposition, particularly during the inflammation stage. Transcriptomic analysis revealed significant overlap, but differences were observed and clarified in Gene Ontology and KEGG pathway analysis, potentially influenced by changes in interferon-gamma-mediated lipid metabolism. This suggests the suitability of 65 Gy for future preclinical basic and pharmaceutical research connected with radiation-induced lung injury.
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- 2024
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224. Efficacy and Safety of Precision Cryotherapy to Treat Seborrheic Dermatitis of the Scalp.
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Choi YG, Kim SY, Kim JS, Choi YJ, and Kim WS
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- Humans, Antifungal Agents therapeutic use, Scalp, Prospective Studies, Treatment Outcome, Erythema drug therapy, Cryotherapy adverse effects, Dermatitis, Seborrheic therapy, Dermatitis, Seborrheic chemically induced, Dermatitis, Seborrheic diagnosis
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Background: Recently, a new cryotherapy device that precisely controls skin temperature was developed. Precision cryotherapy (PC) can be a safe and alternative treatment modality for immune-related skin diseases that are difficult to treat by conventional cryotherapy because of serious adverse events., Objective: To evaluate the efficacy and safety of PC in scalp seborrheic dermatitis (SD)., Methods: A single-arm, prospective trial was designed. Twenty-four patients with SD underwent 3 PC interventions 2 weeks apart. At the baseline, Week 6, and Week 8, overall improvements in Physician Global Assessment (PGA) and clinical severity scores were assessed. At each visit, the erythema index (EI) and transepidermal water loss were evaluated. The patients scored 9 subjective symptoms using a visual analog scale (VAS)., Results: The itch VAS score decreased by 50.4% at Week 8. Blinded investigators reported improvement of PGA scores from 2.86 ± 0.62 to 1.66 ± 0.61 and clinical severity scores from 4.55 ± 1.30 to 2.45 ± 1.37. The average EI decreased by 19.6% at Week 8 ( p < .05)., Conclusion: This study not only demonstrated the efficacy and safety of PC in scalp SD but it also revealed insights for PC being a promising treatment modality in immune-related skin diseases., (Copyright © 2023 by the American Society for Dermatologic Surgery, Inc. Published by Wolters Kluwer Health, Inc. All rights reserved.)
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- 2024
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225. Risk factors for sialocele after parotidectomy: Does tumor size really matter?
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Kim BS, Kim MR, Kim YW, Baek MJ, Suh TK, and Kim SY
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- Humans, Male, Retrospective Studies, Parotid Gland surgery, Parotid Gland pathology, Risk Factors, Postoperative Complications epidemiology, Parotid Neoplasms pathology, Cysts pathology, Salivary Gland Diseases pathology
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Objective: Sialocele that develops after parotid surgery often prolongs the treatment period and stresses both the surgeon and patient. The extent of surgery and tumor size are known to be associated with sialocele occurrence. We investigated the incidence of post-parotidectomy sialocele and the associated risk factors, with a focus on tumor size., Methods: We retrospectively reviewed the medical records of 172 patients who underwent parotidectomy between January 2013 and May 2020 at Haeundae Paik Hospital, Inje University of Korea. We stratified patients into those with and without sialocele (fluid collection in the operative bed). We compared clinical data, patient demographics, and surgical details; we identified risk factors for sialocele development after parotid surgery., Results: Seventeen patients were diagnosed with post-parotidectomy sialocele (9.88%; 17/172). Univariate logistic regression revealed that the male sex, deep lobe tumor location, and large tumor size were significantly associated with postoperative sialocele (p = 0.015, 0.009, and 0.016, respectively). We subjected these parameters to multivariate analyses; the odds ratios were 3.70, 3.58, and 2.34, respectively. Receiver operating characteristic curve analyses showed that a tumor size > 2.50 cm was the optimal cutoff in terms of predicting post-parotidectomy sialocele., Conclusion: Male sex, a tumor in the deep lobe, and large tumor size were strongly associated with increased risk for sialocele after parotidectomy. Tumor size > 2.50 cm serves as the cutoff identifying patients likely to experience sialocele after parotid surgery., Competing Interests: Declaration of Competing Interest The Authors declares that there is no conflict of interest., (Copyright © 2023. Published by Elsevier B.V.)
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- 2023
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226. NXC736 Attenuates Radiation-Induced Lung Fibrosis via Regulating NLRP3/IL-1β Signaling Pathway.
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Kim SY, Park S, Cui R, Lee H, Choi H, Farh ME, Jo HI, Lee JH, Song HJ, Lee YJ, Lee YS, Lee BY, and Cho J
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- Mice, Animals, NLR Family, Pyrin Domain-Containing 3 Protein metabolism, Lung pathology, Fibrosis, Inflammasomes metabolism, Signal Transduction, Radiation Fibrosis Syndrome, Pulmonary Fibrosis drug therapy, Pulmonary Fibrosis etiology, Pulmonary Fibrosis metabolism, Radiation Injuries metabolism
- Abstract
Radiation-induced lung fibrosis (RILF) is a common complication of radiotherapy in lung cancer. However, to date no effective treatment has been developed for this condition. NXC736 is a novel small-molecule compound that inhibits NLRP3, but its effect on RILF is unknown. NLRP3 activation is an important trigger for the development of RILF. Thus, we aimed to evaluate the therapeutic effect of NXC736 on lung fibrosis inhibition using a RILF animal model and to elucidate its molecular signaling pathway. The left lungs of mice were irradiated with a single dose of 75 Gy. We observed that NXC736 treatment inhibited collagen deposition and inflammatory cell infiltration in irradiated mouse lung tissues. The damaged lung volume, evaluated by magnetic resonance imaging, was lower in NXC736-treated mice than in irradiated mice. NXC736-treated mice exhibited significant changes in lung function parameters. NXC736 inhibited inflammasome activation by interfering with the NLRP3-ASC-cleaved caspase-1 interaction, thereby reducing the expression of IL-1β and blocking the fibrotic pathway. In addition, NXC736 treatment reduced the expression of epithelial-mesenchymal transition markers such as α-SMA, vimentin, and twist by blocking the Smad 2,3,4 signaling pathway. These data suggested that NXC736 is a potent therapeutic agent against RILF.
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- 2023
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227. The Role of Open Conservation Surgery in the Era of Minimally Invasive Surgery for Hypopharyngeal Cancer.
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Bang J, Lee OH, Kim GJ, Sun DI, and Kim SY
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- Humans, Neoplasm Recurrence, Local pathology, Thyroid Gland pathology, Minimally Invasive Surgical Procedures, Retrospective Studies, Hypopharyngeal Neoplasms surgery, Hypopharyngeal Neoplasms pathology, Carcinoma, Squamous Cell pathology
- Abstract
Background and Objectives: Total laryngectomy with partial pharyngectomy is traditionally the principal curative treatment for hypopharyngeal cancer; however, conservative surgical approaches that minimize functional disability are attracting increasing interest. Thus, we evaluated the appropriateness and oncological outcomes of open conservation surgery for such patients. Materials and Methods: We reviewed the medical records of 49 patients who underwent vertical hemipharyngolaryngectomy from 1998 to 2018 at a single institution. Results: Locoregional recurrences developed in 19 patients (38.8%) and distant metastases in 6 (12.2%). Histopathologically, paraglottic space invasion was apparent in 13 patients (26.5%), pre-epiglottic space invasion in 4 (8.2%), thyroid cartilage invasion in 9 (18.4%), thyroid gland invasion in 2, perineural invasion in 11 (22.4%), and lymphovascular invasion in 35 (71.4%). The 5-year overall survival of patients who underwent open conservation surgery was comparable to that of patients who underwent total laryngectomy with partial pharyngectomy (68.7% vs. 48.4%, p = 0.14). Pre-epiglottic space invasion significantly decreased the 5-year disease-free survival rate after open conservation surgery (69.7% vs. 17.9%, p = 0.01). Conclusions: We found that pre-epiglottic space invasion negatively impacted disease control after open conservation surgery, emphasizing the crucial role played by a preoperative evaluation during patient selection.
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- 2023
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228. Oncologic and functional outcomes of neoadjuvant chemotherapy followed by surgery in human papillomavirus-positive tonsillar cancer.
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Bang J, Shin HI, Kim GJ, Kim SY, and Sun DI
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- Humans, Neoadjuvant Therapy, Treatment Outcome, Human Papillomavirus Viruses, Retrospective Studies, Chemotherapy, Adjuvant, Tonsillar Neoplasms surgery, Papillomavirus Infections complications
- Abstract
Background: Functional outcomes of neoadjuvant chemotherapy in human papillomavirus (HPV)-positive tonsillar cancer remained unclear., Methods: We retrospectively reviewed the medical records of HPV-positive patients with tonsillar cancer. Of 112 patients, 38 were assigned to a neoadjuvant chemotherapy group and 74 were assigned to an upfront surgery group., Results: Pathological analyses showed that the risks of close or positive resection margins and lymphovascular invasion were lower in patients who received neoadjuvant chemotherapy. The 5-year disease-free survival was significantly higher in the neoadjuvant chemotherapy group than in the upfront surgery group, but the 5-year overall survival was not. The time to commencement of oral feeding and the mean hospital stay were significantly shorter in the neoadjuvant chemotherapy group. The neoadjuvant chemotherapy group was more likely than the upfront surgery group to resume a regular diet., Conclusions: Compared with upfront surgery, neoadjuvant chemotherapy improved the functional outcomes and 5-year disease-free survival., (© 2023 Wiley Periodicals LLC.)
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- 2023
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229. Therapeutic effects of clonazepam in patients with burning mouth syndrome and various symptoms or psychological conditions.
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Shin HI, Bang JI, Kim GJ, Kim MR, Sun DI, and Kim SY
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- Humans, Clonazepam therapeutic use, Dysgeusia drug therapy, Retrospective Studies, Pain drug therapy, Burning Mouth Syndrome drug therapy, Burning Mouth Syndrome diagnosis, Xerostomia drug therapy, Xerostomia complications
- Abstract
Burning mouth syndrome (BMS) is frequently accompanied by dysgeusia and xerostomia. Clonazepam has been widely prescribed and is effective, but it is unclear whether clonazepam also affects the symptoms that accompany BMS, or whether such symptoms affect treatment outcomes. Here, we investigated the therapeutic outcomes in BMS patients with various symptoms or comorbidities. We retrospectively reviewed 41 patients diagnosed with BMS between June 2010 and June 2021 at a single institution. Patients were instructed to take clonazepam for 6 weeks. Before the first dose, burning pain intensity was measured using a visual analog scale (VAS); the unstimulated salivary flow rate (USFR), psychologic characteristics, site(s) of pain, and any taste disturbance were evaluated. Burning pain intensity was measured again after 6 weeks. Thirty-one of the 41 patents (75.7%) exhibited a depressed mood, whereas more than 67.8% of the patients exhibited anxiety. Subjective xerostomia was reported by ten patients (24.3%). The mean salivary flow rate was 0.69 mL/min and hyposalivation (an unstimulated salivary flow rate ≤ 0.5 mL/min) was apparent in ten patients (24.3%). Dysgeusia was present in 20 patients (48.7%); a bitter taste (n = 15, 75%) was reported by the largest proportion of patients. Patients who reported a bitter taste responded best in terms of burning pain reduction after 6 weeks (n = 4, 26.6%). Overall, 32 patients (78%) reported decreased oral burning pain after clonazepam (mean VAS score changed from 6.56 to 5.34) use. Patients who reported taste disturbances exhibited a significantly greater decrease in burning pain, compared with other patients (mean VAS score changed from 6.41 to 4.58) (p = 0.02). Clonazepam significantly improved burning pain in BMS patients who had taste disturbances., (© 2023. The Author(s).)
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- 2023
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230. Persistent subjective voice symptoms for two years after thyroidectomy.
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Kim GJ, Bang J, Shin HI, Kim SY, Bae JS, Kim K, Kim JS, Hwang YS, Shim MR, and Sun DI
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- Humans, Thyroidectomy adverse effects, Thyroidectomy methods, Thyroid Gland, Voice Quality, Voice Disorders diagnosis, Voice Disorders etiology, Voice, Dysphonia etiology
- Abstract
Background: Voice change after thyroidectomy is an important issue in thyroid surgery. However, little is known about long-term voice outcomes after thyroidectomy. This study investigates the long-term voice outcomes of thyroidectomy up to two years after surgery. Also, we analyzed the pattern of recovery through acoustic tests over time., Methods: We reviewed data from 168 patients who underwent thyroidectomy between January 2020 and August 2020 at a single institution. The Thyroidectomy-related Voice and Symptom Questionnaire (TVSQ) score and acoustic voice analysis results were examined preoperatively and postoperative one, three, and six months, and one and two years after surgery. We divided patients into two groups based on the TVSQ score (≥15 or <15) at two years postoperatively. We investigated the difference of acoustic characteristics between the two groups and analyzed correlations between acoustic parameters and various clinical and surgical factors., Results: Voice parameters tended to recover, but some parameters and TVSQ scores exhibited deterioration two years after surgery. In the subgroups, among the many clinicopathologic factors examined, voice abuse history including professional voice users (p = 0.014), greater extent of thyroidectomy and neck dissection (p = 0.019, p = 0.029), and high pitch voice (F0; p = 0.005, SFF; p = 0.016) were associated with high TVSQ score at two years., Conclusions: Patients frequently experience voice discomfort after thyroidectomy. After surgery, voice abuse history including professional voice users, greater extent of surgery, and higher pitch voice are associated with worse voice quality and increased risk of persistent voice symptoms over the long-term., Competing Interests: Declaration of competing interest None of the authors reports relevant conflicts of interest., (Copyright © 2023 Elsevier Inc. All rights reserved.)
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- 2023
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231. Are second primary head and neck cancers with previous hematological malignancy more aggressive than de novo head and neck cancers?
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Kim SY, Kim GJ, Bang JI, Shin HI, and Sun DI
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- Humans, Prognosis, Head and Neck Neoplasms surgery, Head and Neck Neoplasms complications, Neoplasms, Second Primary epidemiology, Neoplasms, Second Primary pathology, Carcinoma, Squamous Cell pathology, Hematologic Neoplasms
- Abstract
Objectives: Secondary solid tumors can occur after the treatment of hematological malignancies and are associated with a poor prognosis. We evaluated the survival outcomes of patients with second primary head and neck cancers according to the site of cancer origin, type of hematological malignancy, and age., Materials and Methods: We enrolled all patients who underwent surgery for second primary head and neck cancer and were previously treated for hematological malignancy between 1997 and 2020. We analyzed the survival outcomes of patients with second primary head and neck cancer, and compared them with 3126 de novo head and neck cancer patients diagnosed during the same period at our hospital., Results: The 5-year overall survival (OS) rate was significantly worse for second primary head and neck cancer patients than de novo cancer patients (52.0 % and 77.9 %, respectively; p = 0.04) and those results were similarly observed in second primary oral cavity cancer (33.3 % and 75.7 %, respectively; p < 0.01). Patients with myelodysplastic syndrome and acute myeloid leukemia showed significantly worse 5-year OS rate than those with other types of hematological malignancies (p = 0.036). Multivariate analysis showed that bone marrow transplantation (BMT) was a risk factor for the recurrence of head and neck cancers (odds ratio = 6.635, p = 0.042)., Conclusion: Patients with second primary head and neck cancer, particularly of the oral cavity, had a worse prognosis than patients with de novo head and neck cancer. BMT predicts recurrence in second primary head and neck cancer patients., Competing Interests: Declaration of competing interest The authors declare that they have no potential conflict of interest relevant to this article., (Copyright © 2022 Elsevier Inc. All rights reserved.)
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- 2023
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232. Guideline for the Surgical Management of Locally Invasive Differentiated Thyroid Cancer From the Korean Society of Head and Neck Surgery.
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Park JO, Kim JH, Joo YH, Kim SY, Kim GJ, Kim HB, Lee DH, Hong HJ, Park YM, Chung EJ, Ji YB, Oh KH, Lee HS, Lee DK, Park KN, Ban MJ, Kim BH, Kim DH, Cho JK, Ahn DB, Kim MS, Seok JG, Jang JY, Choi HG, Kim HJ, Park SJ, Jung EK, Kim YS, Hong YT, Lee YC, Won HR, Shin SC, Baek SK, and Kwon SY
- Abstract
The aim of this study was to develop evidence-based recommendations for determining the surgical extent in patients with locally invasive differentiated thyroid cancer (DTC). Locally invasive DTC with gross extrathyroidal extension invading surrounding anatomical structures may lead to several functional deficits and poor oncological outcomes. At present, the optimal extent of surgery in locally invasive DTC remains a matter of debate, and there are no adequate guidelines. On October 8, 2021, four experts searched the PubMed, Embase, and Cochrane Library databases; the identified papers were reviewed by 39 experts in thyroid and head and neck surgery. The Grading of Recommendations Assessment, Development and Evaluation (GRADE) approach was used to assess the quality of evidence, and to develop and report recommendations. The strength of a recommendation reflects the confidence of a guideline panel that the desirable effects of an intervention outweigh any undesirable effects, across all patients for whom the recommendation is applicable. After completing the draft guidelines, Delphi questionnaires were completed by members of the Korean Society of Head and Neck Surgery. Twenty-seven evidence-based recommendations were made for several factors, including the preoperative workup; surgical extent of thyroidectomy; surgery for cancer invading the strap muscles, recurrent laryngeal nerve, laryngeal framework, trachea, or esophagus; and surgery for patients with central and lateral cervical lymph node involvement. Evidence-based guidelines were devised to help clinicians make safer and more efficient clinical decisions for the optimal surgical treatment of patients with locally invasive DTC.
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- 2023
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233. CNN-based object detection and growth estimation of plum fruit (Prunus mume) using RGB and depth imaging techniques.
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Kim E, Hong SJ, Kim SY, Lee CH, Kim S, Kim HJ, and Kim G
- Subjects
- Humans, Fruit, Neural Networks, Computer, Algorithms, Prunus domestica, Prunus
- Abstract
Modern people who value healthy eating habits have shown increasing interest in plum (Prunus mume) fruits, primarily owing to their nutritiousness and proven efficacy. As consumption increases, it becomes important to monitor work to prevent Prunus mume fruits from falling out. Moreover, determining the growth status of Prunus mume is also crucial and is attracting increasing attention. In this study, convolutional neural network (CNN)-based deep learning object detection was developed using RGBD images collected from Prunus mume farms. These RGBD images consider various environments, including the depth information of objects in the outdoor field. A faster region-based convolutional neural network (R-CNN), EfficientDet, Retinanet, and Single Shot Multibox Detector (SSD) were applied for detection, and the performance of all models was estimated by comparing their respective computing speeds and average precisions (APs). The test results show that the EfficientDet model is the most accurate, and SSD MobileNet is the fastest among the four models. In addition, the algorithm was developed to acquire the growth status of P. mume fruits by applying the coordinates and score values of bounding boxes to the depth map. Compared to the diameters of the artificial Prunus mume fruits used as the experimental group, the calculated diameters were very similar to those of the artificial objects. Collectively, the results demonstrate that the CNN-based deep learning Prunus mume detection and growth estimation method can be applied to real farmlands., (© 2022. The Author(s).)
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- 2022
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234. Reflex of the Gracilis in Brain Death.
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Ryu HU, Kim SY, and Kang HG
- Abstract
In patients with brain death, reflex movements originating from spinal reflexes are observed intermittently. Generally, they can occur under hypoxic stimuli such as when the ventilator is removed, under physical stimuli such as bending the neck, or under hypotension. Finger- and toe-jerk responses are commonly observed reflex movements that can occur in patients with brain death. In addition, the Lazarus sign, known as the most dramatic reflex movement, appears mainly in the upper extremities (e.g., the hands and arms) and in the distal lower extremities (e.g., the soles and toes). This case showed a reflex movement that was triggered by the contraction of the gracilis, a proximal muscle in the lower extremities, with only a gentle stimulus on the sole.
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- 2022
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235. Construct-Validating Humility: Perceptions of a Humble Doctor.
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Kim SY and Sahlstein Parcell E
- Abstract
Examining the nature of humility using self-report measures has been a challenging endeavor due to concerns of response biases and the common misconception that equates humility with self-deprecation. Alternatively, this study attempts to validate the construct of humility by assessing subjects' ( N = 553) responses to a speech written to represent the core elements of humility as opposed to self-deprecation or unconditional self-underrating. Data show that (a) humility comprises a latent construct subsuming accurate self-assessment, open-mindedness, and egalitarianism; and (b) humility outperforms self-deprecation in enhancing perceived sincerity, source credibility, and the intention to interact with the source. Results indicate, particularly for expert sources, that humility cues can promote approachability while maintaining perceived expertise., Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest., (Copyright © 2022 Kim and Sahlstein Parcell.)
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- 2022
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236. Efferocytosis and enhanced FPR2 expression following apoptotic cell instillation attenuate radiation-induced lung inflammation and fibrosis.
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Kim SY, Kim JM, Lee SR, Kim HJ, Lee JH, Choi HL, Lee YJ, Lee YS, and Cho J
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- Animals, Apoptosis radiation effects, Fibrosis, Humans, Mice, Phagocytosis, Quality of Life, Receptors, Formyl Peptide metabolism, Receptors, Lipoxin metabolism, Lung metabolism, Lung pathology, Lung radiation effects, Pneumonia chemically induced, Radiation Injuries metabolism, Radiation Injuries pathology
- Abstract
Lung inflammation and fibrosis are common side effects of radiotherapy that can lead to serious reduction in the quality of life of patients. However, no effective treatment is available, and the mechanisms underlying its pathophysiology are poorly understood. Irradiation increases formyl peptide receptor 2 (FPR2) expression in lung tissue, and FPR2 agonists are known to promote the uptake of apoptosis cells, referred to as efferocytosis that is a hallmark of the resolution of inflammation. Herein, in a mouse model of radiation-induced lung injury (RILI), efferocytosis was induced by injecting apoptotic cells into the lung through the trachea, and its correlation with FPR expression and the effect of efferocytosis and FPR expression on RILI were assessed. Interestingly, when apoptotic cells were injected into the lung, the radiation-induced increase in FPR2 expression was further amplified. In the mouse model of RILI, apoptotic cell instillation reduced the volume of the damaged lung and prevented the decrease in lung function. Additionally, the expression of inflammatory cytokines, fibrosis-related markers, and oxidative stress-related markers was reduced by apoptotic cell instillation. Co-administration of apoptotic Jurkat cells and WRW4, the FPR2 antagonist, reversed these effects. These findings suggest that efferocytosis induced by apoptotic cell instillation and enhanced FPR2 expression attenuate RILI, thereby alleviating lung inflammation and fibrosis., Competing Interests: Declaration of competing interest The authors declare that they have no conflict of interest., (Copyright © 2022 The Authors. Published by Elsevier Inc. All rights reserved.)
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- 2022
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237. Development and Validation of the Thyroidectomy-Related Voice and Symptom Questionnaire (TVSQ).
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Hwang YS, Shim MR, Kim GJ, Lee DH, Nam IC, Park JO, Kim SY, Park YH, Bae JS, Lee SH, Kim JS, and Sun DI
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- Humans, Reproducibility of Results, Surveys and Questionnaires, Thyroidectomy adverse effects, Dysphonia, Voice, Voice Disorders diagnosis, Voice Disorders etiology
- Abstract
Objectives: Common symptoms after thyroidectomy include voice change and throat and neck discomfort. But no common questionnaire has been developed. This study was performed to evaluate the reliability and validity of the Thyroidectomy-related Voice and Symptom Questionnaire (TVSQ)., Methods: Fourty items of the TVSQ were divided into 20 items related to the "voice change" and "throat and neck discomfort" subcategories, using item generation. Through a reduction process, 20 items were removed and 20 items were used. For the patients after thyroidectomy, we evaluated the reliability and validity of each of the 20 items through item discrimination, test-retest reliability, concurrent validity, and external validity by comparing normal group and laryngeal disease patients. Also, the patients were compared before as well as 2 and 4 weeks after thyroidectomy., Results: Item discrimination assessment showed a significant correlation between TVSQ total score and both the TVSQ "voice change" score (r = 0.908**) and TVSQ "throat and neck discomfort" score (r = 0.862**). Test-retest reliability assessment showed a significant correlation between TVSQ total scores at 2 and 4 weeks postoperatively (r = 0.764**). Concurrent validity assessment revealed that the TVSQ showed high correlations with other voice questionnaires (Voice Handicap Index, Reflux Finding Index, and Vocal Track Discomfort Scale; r = 0.538**-0.830**). External validity assessment revealed that the TVSQ was suitable for patients after thyroidectomy (P < 0.000**)., Conclusions: Validity and reliability tests revealed that the TVSQ was suitable for assessment of the subjective feelings of patients with voice change and throat and neck discomfort after thyroidectomy., (Copyright © 2020 The Voice Foundation. Published by Elsevier Inc. All rights reserved.)
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- 2022
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238. Analysis of voice changes after thyroidectomy using the thyroidectomy-related voice and symptom questionnaire.
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Kim SY, Kim GJ, Lee DH, Bae JS, Lee SH, Kim JS, Hwang YS, Shim MR, Park YH, and Sun DI
- Subjects
- Adult, Female, Humans, Lymph Node Ratio, Male, Middle Aged, Neck Dissection, Neoplasm Staging, Postoperative Complications epidemiology, Stroboscopy, Surveys and Questionnaires, Thyroid Cancer, Papillary pathology, Thyroid Neoplasms pathology, Voice Disorders epidemiology, Postoperative Complications physiopathology, Thyroid Cancer, Papillary surgery, Thyroid Neoplasms surgery, Thyroidectomy, Voice Disorders physiopathology
- Abstract
Objective: After thyroidectomy, many patients suffer from voice problems and vague neck discomfort. The Thyroidectomy-related Voice and Symptom Questionnaire (TVSQ) is a self-administered questionnaire used to evaluate pre- and post-operative vocal status as well as throat and neck discomfort. We investigated voice conditions in thyroidectomy patients using the TVSQ as well as correlations between TVSQ responses and objective voice parameters. Also, we examined whether any clinicopathologic or surgical factors affect phonetic change after thyroidectomy., Methods: We retrospectively reviewed the records of 242 patients who underwent total thyroidectomy to treat papillary carcinoma between January to December of 2019. Of these, we enrolled 232 who exhibited normal vocal cord mobility after surgery. TVSQ responses and acoustic voice analysis results were examined preoperatively and at 1, 3, and 6 months postoperatively. We subclassified patients into favorable and unfavorable TVSQ groups based on the increase in TVSQ score (△TVSQ ≥20) at 1 month postoperatively. We then investigated the difference of acoustic characteristics between two groups and analyzed the correlations between acoustic parameters and various clinical and surgical factors including pathologic results and lymph node status by subgroup., Result: All acoustic voice parameters except for the noise-to-harmonics ratio were significantly worse at 1 month postoperatively and recovered over time, but the TVSQ score did not recover from the 1-month value until 6 months postoperatively. In the subgroups, among the many clinicopathologic factors examined, advanced N stage (p = 0.002) and high positive total and central-and-lateral-neck lymph node ratios were significantly associated with an increased risk of an unfavorable TVSQ (p = 0.049, 0.027, <0.01, respectively). Among the acoustic parameters, only the changes in TVSQ total score and voice score were correlated with deterioration in jitter and shimmer at 1 month postoperatively. However, the correlations was not statistically significant and had disappeared at 6 months postoperatively., Conclusion: We figured out that TVSQ was able to capture the negative effects of lymph node status and lymph node dissection on vocal outcomes after thyroidectomy. Although there was a weak correlation between worsened perturbation value and TVSQ changes, no other acoustic analysis parameters were statistically significant correlated with the TVSQ score., Competing Interests: Declaration of Competing Interest There is no conflict of interest., (Copyright © 2021. Published by Elsevier B.V.)
- Published
- 2021
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239. Reversible cerebral vasoconstriction syndrome with basilar artery stenosis: A case report.
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Joh SW, Kim SY, Shin BS, and Kang HG
- Subjects
- Adult, Brain Stem Infarctions drug therapy, Cerebrovascular Circulation, Computed Tomography Angiography, Dual Anti-Platelet Therapy, Humans, Magnetic Resonance Angiography, Male, Vasoconstriction, Vertebrobasilar Insufficiency drug therapy, Brain Stem Infarctions diagnostic imaging, Vertebrobasilar Insufficiency diagnostic imaging
- Abstract
Introduction: Acute severe headaches in young patients may be associated with fatal neurological complications that necessitate imaging examinations. Among acute severe headaches, a thunderclap headache may indicate the rupture of a cerebral aneurysm or the onset of reversible cerebral vasoconstriction syndrome for which emergent evaluation is required., Patient Concerns: We report the case of a 36-year-old man who presented to our hospital with an acute severe headache after excessive exercise the previous day. He was prescribed a pain reliever and discharged under the suspicion of vestibular migraine but returned to the emergency room after 4 hours due to right hemiparesis, right facial palsy, severe dysarthria, and a mild drowsy mental status., Diagnosis: After cerebral angiography, we diagnosed basilar artery stenosis with acute infarction in the posterior circulation due to reversible cerebral vasoconstriction syndrome., Interventions: Brain computed tomography angiography revealed complete occlusion of the vertebrobasilar artery. Transfemoral cerebral angiography showed spontaneous improvement in the occlusion before thrombectomy., Outcomes: Ten months later, high-resolution vessel wall magnetic resonance angiography showed persisting severe stenosis of the basilar artery., Conclusions: A headache in young patients with risk factors of atherosclerosis, such as smoking history, uncontrolled hypertension, and dyslipidemia may be caused by reversible cerebral vasoconstriction syndrome or ischemic stroke, which has fatal neurological complications. Therefore, reversible cerebral vasoconstriction syndrome or ischemic stroke should be suspected and appropriately evaluated in such patients, even if the headache is not the thunderclap type., Competing Interests: The authors have no conflicts of interest to disclose., (Copyright © 2021 the Author(s). Published by Wolters Kluwer Health, Inc.)
- Published
- 2021
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240. Next-generation sequencing for typing human papillomaviruses and predicting multi-infections and their clinical symptoms.
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Kim SY, Hwang KA, Ann JH, Kim JH, and Nam JH
- Subjects
- Atypical Squamous Cells of the Cervix, Female, High-Throughput Nucleotide Sequencing, Humans, Papillomaviridae genetics, Uterine Cervical Neoplasms, Papillomavirus Infections diagnosis
- Abstract
Human papillomavirus (HPV) has more than 100 different types, some of which are associated with cancer. The most common example is that of cervical cancer, which is associated with HPV16 and HPV18. Here, we performed next-generation sequencing (NGS) to type 2436 samples obtained from Korean women to elucidate the correlation between multiple infections, virus types, and cytology. NGS revealed that types 58, 56, and 16 were the most common in high-risk (HR) types, whereas types 90, 54, and 81 were the most common in low-risk (LR) types. The incidence of atypical squamous cells of undetermined significance (ASCUS) or high-grade squamous intraepithelial lesion (HSIL) was 11.45% in single-type cases and 27.17% in multiple infections by the two types of HPV. ASCUS or HSIL was 29.79% in only the HR type multiple infections and 29.81% in mixed high- and low-risk types of multiple infections, whereas it was 18.79% in LR type multiple infections (P ≤ 0.0001). Co-infection by LR-HPV and HR-HPV is therefore more likely to cause cell lesions. Collectively, these results show that the higher the incidence of multiple infections, the greater the frequency of cell lesions. Thus, to predict the clinical symptoms, it would be beneficial to confirm the HPV type and multiple infections using NGS, although this could be relatively expensive., (© 2021 The Societies and John Wiley & Sons Australia, Ltd.)
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- 2021
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241. Aggravation of Acute Ischemic Stroke with Cerebral Hypoperfusion after Intravenous Propacetamol.
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Kim SY, Lee CH, Lee SJ, Shin BS, and Kang HG
- Abstract
Competing Interests: The authors have no potential conflicts of interest to disclose.
- Published
- 2021
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242. Voice change after thyroidectomy without vocal cord paralysis: Analysis of 2,297 thyroidectomy patients.
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Kim SY, Kim GJ, Lee DH, Bae JS, Lee SH, Kim JS, Hwang YS, Shim MR, Park YH, and Sun DI
- Subjects
- Adult, Age Factors, Female, Follow-Up Studies, Humans, Male, Middle Aged, Postoperative Complications etiology, Postoperative Complications physiopathology, Retrospective Studies, Risk Assessment, Risk Factors, Sex Factors, Postoperative Complications epidemiology, Thyroid Neoplasms surgery, Thyroidectomy adverse effects, Voice Quality physiology
- Abstract
Background: Some patients experience long-term voice change after thyroidectomy. One of the most common symptoms of voice change is pitch lowering, which is closely related to unfavorable voice quality. Here we observed voice outcomes for 6 months of follow-up after thyroidectomy to identify factors closely related to low-pitched voice., Methods: We retrospectively reviewed the records of 2,297 patients who underwent thyroidectomy between January 2014 and December 2017. All the patients had their vocal status examined using videostroboscopy, acoustic voice analyses, aerodynamic study, and Thyroidectomy-Related Voice Questionnaire scores. We stratified patients into 2 groups (low-pitched voice versus favorable voice) according to pitch lowering (reduction in speaking fundamental frequency ≥12 Hz 1 month after thyroidectomy compared to the preoperative value). We compared preoperative data with postoperative data collected 1, 3, and 6 months after thyroidectomy to identify factors contributing to low-pitched voice., Results: Univariate logistic regression analyses showed that factors related to low-pitched voice were female sex, older age, low body weight, short stature, and a high positive lymph node ratio. Multivariate analyses showed that female sex and older age were significantly associated with a negative prognosis for low-pitched voice 1 month after thyroidectomy (odds ratios 0.41 and 1.04, respectively; P < .001). Receiver operating characteristic curves for predicting sustained low-pitched voice during 6 months showed that speaking fundamental frequency ≥12.48 Hz 1 month after thyroidectomy was the optimal cutoff value, with 87.9% sensitivity and 95.8% specificity (P < .001)., Conclusion: Female sex and older age are strongly associated with increased risk for low-pitched voice after thyroidectomy. Speaking fundamental frequency ≥12.48 Hz 1 month after thyroidectomy can be used to predict sustained low-pitched voice after thyroidectomy., (Copyright © 2020 Elsevier Inc. All rights reserved.)
- Published
- 2020
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243. How Can We Predict the Recovery from Pitch Lowering After Thyroidectomy?
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Kim SY, Park JO, Bae JS, Lee SH, Hwang YS, Shim MR, Park YH, and Sun DI
- Subjects
- Female, Follow-Up Studies, Humans, Male, Middle Aged, Multivariate Analysis, Postoperative Period, ROC Curve, Retrospective Studies, Surveys and Questionnaires, Thyroid Gland surgery, Voice Quality, Postoperative Complications, Speech Acoustics, Thyroidectomy adverse effects, Vocal Cords pathology, Voice Disorders etiology
- Abstract
Background: Some of patients are suffered from pitch lowering of voice after thyroidectomy. We sought to identify factors predictive of a recovery from lowered pitch voice after thyroid surgery., Methods: We retrospectively reviewed the records of 133 patients who underwent total thyroidectomy to treat papillary carcinoma between January 2012 and February 2013. Of these, we enrolled 78 who exhibited a lower-pitched voice (SFF fall > 12 Hz) at 2 weeks post-operatively than pre-operatively and investigated pitch recovery after 3 months. We subclassified patients into recovery and non-recovery groups and compared videostroboscopic findings, acoustic voice data, and thyroidectomy-related voice questionnaire scores pre-operatively and 2, 8, and 12 weeks post-operatively., Results: Vocal cord asymmetry on videostroboscopic examination at 2 weeks post-operatively (odds ratio 19.056, p = 0.001*) was more frequent in the non-recovery group. In acoustic analysis, mean pre-operative SFF was higher in the non-recovery group than the recovery group (190.9 ± 27.5 and 180.9 ± 24.6 Hz, respectively; p = 0.030*). Also, a reduction in the SFF of > 19.6 Hz, at 2 weeks post-operatively versus pre-operatively, predicted non-recovery of pitch-lowering in patients with reduced SFF within post-operative 3 months, with 72.0% sensitivity and 71.2% specificity. After 6 months of follow-up, no patient who exhibited an SFF fall > 19.6 Hz recovered to within 10 Hz of the pre-operative value., Conclusion: A reduction in the speaking fundamental frequency (SFF) > 19.6 Hz at 2 weeks post-operatively predicted persisting lowering of voice pitch after thyroidectomy among those with lower-pitched voices after surgery. Pre-operative high SFF and post-operative stroboscopic findings including vocal cord asymmetry at 2 weeks post-operatively also predicted persisting lowering of voice pitch for 3 months.
- Published
- 2020
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244. Acute basilar artery occlusion with recurrent shivering: A case report.
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Lee CH, Jeon SH, Kim SY, Shin BS, and Kang HG
- Subjects
- Arterial Occlusive Diseases surgery, Cerebral Angiography, Humans, Male, Middle Aged, Thrombectomy, Arterial Occlusive Diseases complications, Basilar Artery pathology, Shivering physiology
- Abstract
Rationale: Shivering is an important physiological response of the body that causes muscle tremors to maintain temperature homeostasis. Traumatic brain injuries that affect the hypothalamus cause hypothermia, and physical removal of suprasellar tumors causes thermoregulation imbalance. However, no study has reported shivering due to ischemic stroke., Patient Concerns: A 58-year-old male patient was admitted to our emergency department to evaluate severe stenosis of the basilar artery. While waiting for further examination, he exhibited coarse shivering and severe dysarthria., Diagnosis: Brain computed tomography angiography revealed occlusion of the entire basilar artery, and cerebral hypoperfusion was diagnosed in that area., Interventions: Transfemoral cerebral angiography (TFCA) was immediately performed, followed by thrombectomy of the basilar artery., Outcomes: Neurological deficits, including shivering, were rapidly reversed. The same symptom reoccurred 5 hours later, and TFCA was performed for thrombectomy and stenting, and neurological symptoms immediately reversed. The patient's neurological symptoms did not worsen during hospitalization., Lessons: Patients with acute basilar artery occlusion need prompt management because they have a higher mortality rate than those with other intracranial artery occlusions. When a patient exhibits neurological deficits accompanied by abrupt shivering for no specific reason, basilar artery occlusion must be considered.
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- 2020
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245. Effects of Voice Therapy Using the Lip Trill Technique in Patients With Glottal Gap.
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Nam IC, Kim SY, Joo YH, Park YH, Shim MR, Hwang YS, and Sun DI
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- Adult, Aged, Aged, 80 and over, Female, Humans, Male, Middle Aged, Recovery of Function, Treatment Outcome, Vibration, Voice Disorders diagnosis, Voice Disorders physiopathology, Young Adult, Glottis physiopathology, Phonation, Voice, Voice Disorders therapy, Voice Training
- Abstract
Objectives: Lip trills are widely used as a voice warm-up technique among singers. However, little is known about the effects of lip trills in cases of voice disorders. We examined the therapeutic effects of lip trills in patients with glottal gap., Methods: Patients with glottal gap were classified into three groups according to the type of gap: gap-only, gap with muscle tension dysphonia (MTD), and a sulcus vocalis group. Patients underwent perceptual, acoustic/aerodynamic analyses, stroboscopic evaluations, and subjective analyses using a questionnaire before and after lip trills. The results were analyzed before and after trills and according to and between the groups., Results: The results in 42 patients were analyzed. Most of the parameters were improved and glottal gap was significantly reduced after trills in all patients. In the gap-only group (n = 19), most of the parameters showed improvement and were within the respective normal ranges, and glottal gap was improved after trills. In the MTD group (n = 13), although many parameters were improved, the improvement was not as prominent as in the gap-only group. In the sulcus vocalis group (n = 10), only some of the parameters were improved and the improvement in glottal gap was limited., Conclusions: Lip trills were an effective treatment for glottal gap. The therapeutic effect was prominent in the gap-only group, followed by the MTD and sulcus vocalis groups. Trills can be used as an adjuvant treatment option in voice therapy in cases of various voice disorders., (Copyright © 2018 The Voice Foundation. Published by Elsevier Inc. All rights reserved.)
- Published
- 2019
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246. Metabolic Syndrome and Incidence of Laryngeal Cancer: A Nationwide Cohort Study.
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Kim SY, Han KD, and Joo YH
- Subjects
- Adult, Aged, Alcohol Drinking epidemiology, Female, Humans, Incidence, Laryngeal Neoplasms etiology, Logistic Models, Metabolic Syndrome blood, Metabolic Syndrome epidemiology, Middle Aged, Republic of Korea epidemiology, Smoking epidemiology, Laryngeal Neoplasms epidemiology, Metabolic Syndrome complications
- Abstract
It is unknown whether the presence of metabolic syndrome (MetS) affects the incidence of laryngeal cancer. The aim of this national population-based retrospective study was to analyze the relationship between MetS and the incidence of laryngeal cancer. Patients with laryngeal cancer (ICD-10: C32) between 2009 and 2010 were retrospectively identified and tracked until 2015 using the Korean Health Insurance claims database. During the seven-year follow-up period, 5,322 subjects were newly diagnosed with larynx cancer. The mean age of people with laryngeal cancer was much higher than those without (63.29 vs. 47.7 years, p < 0.0001), and the incidence of larynx cancer in men was much higher than that in women (93.16% vs. 6.84%, p < 0.0001). Age, gender, smoking status, alcohol intake, and exercise-adjusted hazard ratios indicated that participants with MetS had a 1.13-fold higher hazard of having larynx cancer than those without MetS. The number of MetS components was a strong risk factor for laryngeal cancer with a higher risk estimate of this cancer in both ex- and current smokers as well as people who have never smoked. MetS was found to be an independent risk factor for the incidence of laryngeal cancer. In Korea, MetS and its components are significantly associated with the development of laryngeal cancer.
- Published
- 2019
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247. Do I sound dry? Comparative voice analysis of primary Sjögren's syndrome.
- Author
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Kim SY, Lee J, Choi YS, Kim JW, Kwok SK, Park YH, Sun DI, and Park SH
- Subjects
- Acoustics, Case-Control Studies, Disability Evaluation, Female, Humans, Middle Aged, Prognosis, Prospective Studies, Quality of Life, Sjogren's Syndrome diagnosis, Speech Production Measurement, Stroboscopy, Surveys and Questionnaires, Time Factors, Voice Disorders diagnosis, Voice Disorders physiopathology, Xerostomia diagnosis, Xerostomia physiopathology, Salivation, Sjogren's Syndrome complications, Speech Acoustics, Vocal Cords physiopathology, Voice Disorders etiology, Voice Quality, Xerostomia etiology
- Abstract
Objectives: Desiccation of the vocal tract can cause many voice problems. Therefore, we aimed to investigate whether patients with primary Sjögren's syndrome (pSS) with dry mouth have more voice-related problems than controls without the disease and to determine the factors affecting voice in pSS patients., Methods: Patients with pSS and controls complaining of voice-related symptoms underwent acoustic analysis, aerodynamic study and stroboscopic analysis. They also completed the voice handicap index (VHI) questionnaire and perceptual voice analysis (GRBAS). Various disease-related parameters were obtained from pSS registry data., Results: Fifty-five pSS patients and 52 controls were analysed. The subjects were all female, and mean age was 53.9 years. VHI score was significantly higher in the pSS patient group (median [interquartile range], 11 [3-30] vs. 5.5 [0- 15.75], p=0.014). However, the results of acoustic analysis aerodynamic study and stroboscopic findings were not different between the two groups. Disease-related parameters were available in 47 pSS patients. Correlation analysis revealed that jitter value positively correlated with ESSDAI (spearman's rho = 0.29, p=0.048) and patient global assessment (rho=0.3, p= 0.04). High VHI score was associated with low quality of life measured by EQ5D (rho=-0.493, p=0.0001). Of note, patients with longer disease duration (≥ 40 months) showed higher noise-to-harmonics ratio (NHR)., Conclusions: Patients with pSS had higher VHI score, which was associated with low quality of life and longer disease duration was associated with increased noise in pSS patients. The likelihood of voice problems should be addressed with pSS patients, and vocal hygiene education will be important in those patients.
- Published
- 2018
248. Efficacy and Safety of Adjunctive Steroid Injection After Microsurgical Removal of Benign Vocal Fold Lesions.
- Author
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Cho JH, Kim SY, Joo YH, Park YH, Hwang WS, and Sun DI
- Subjects
- Adult, Anti-Inflammatory Agents adverse effects, Chi-Square Distribution, Female, Humans, Injections, Intralesional, Laryngeal Diseases pathology, Laryngeal Diseases physiopathology, Laryngectomy adverse effects, Laryngoscopy, Logistic Models, Male, Microsurgery adverse effects, Middle Aged, Multivariate Analysis, Odds Ratio, Recovery of Function, Recurrence, Republic of Korea, Retrospective Studies, Risk Factors, Seoul, Steroids adverse effects, Stroboscopy, Time Factors, Treatment Outcome, Triamcinolone Acetonide adverse effects, Video Recording, Vocal Cords pathology, Vocal Cords physiopathology, Voice Disorders pathology, Voice Disorders physiopathology, Voice Quality drug effects, Anti-Inflammatory Agents administration & dosage, Laryngeal Diseases therapy, Laryngectomy methods, Microsurgery methods, Steroids administration & dosage, Triamcinolone Acetonide administration & dosage, Vocal Cords drug effects, Vocal Cords surgery, Voice Disorders therapy
- Abstract
Objective: This study aims to investigate the clinical efficacy and safety of immediate intralesional steroid injection in patients undergoing laryngeal microsurgery (LMS) for benign vocal fold lesions (BVFLs)., Study Design: This is a single-institution, retrospective cohort study., Methods: Patients were divided into two groups according to whether or not they received adjunctive steroid injection after LMS. We evaluated the outcomes using objective, perceptual voice analysis and videostroboscopy. We also analyzed clinical parameters and identified risk factors associated with persistent dysphonia after LMS., Results: The study included a total of 211 patients with BVFLs (82 men and 129 women), which comprised 136 vocal polyps (64.5%), 49 nodules (23.2%), and 30 cysts (14.2%); 84 patients (39.8 %) had intralesional steroid administration combined with LMS. The overall results for postoperative voice parameters in both groups were significantly improved. On videostroboscopic examination, the rate of recurrent lesions was lower in the group that received adjunctive steroid injection than in the group with only LMS (P = 0.014). In the multivariate analysis, older age (compared to <50 years of age; odds ratio [OR] = 2.697, 95% confidence interval [CI]: 1.300-5.595, P = 0.008) and duration of hoarseness longer than 6 months (compared to <3 months; OR = 2.729, 95% CI: 1.193-6.242, P = 0.017) were identified as independent risk factors associated with persistent dysphonia. Nevertheless, adjunctive steroid injection was associated with a 0.3-fold (OR = 0.345, 95% CI: 0.152-0.784, P = 0.011) lower risk of persistent dysphonia., Conclusion: Steroid injection combined with LMS in the treatment of BVFLs was safe and associated with improved voice quality., (Copyright © 2017 The Voice Foundation. Published by Elsevier Inc. All rights reserved.)
- Published
- 2017
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249. Prognostic impact of lymph node micrometastasis in oral and oropharyngeal squamous cell carcinomas.
- Author
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Cho JH, Lee YS, Sun DI, Kim MS, Cho KJ, Nam IC, Kim CS, Kim SY, Park YH, and Joo YH
- Subjects
- Carcinoma, Squamous Cell pathology, Female, Humans, Lymph Nodes pathology, Male, Middle Aged, Mouth Neoplasms pathology, Neoplasm Invasiveness, Neoplasm Staging, Pharyngeal Neoplasms pathology, Prognosis, Survival Rate, Carcinoma, Squamous Cell diagnosis, Lymphatic Metastasis diagnosis, Mouth Neoplasms diagnosis, Neoplasm Micrometastasis diagnosis, Pharyngeal Neoplasms diagnosis
- Abstract
Background: The purpose of this study was to determine the role of lymph node micrometastasis in oral and oropharyngeal cancers., Methods: We investigated the presence of micrometastases by cytokeratin immunohistochemical staining in 54 patients with node-negative oral and oropharyngeal carcinomas., Results: The positive rate of cytokeratin expression was 13.0% (7 of 54 patients). The incidence of micrometastasis was significantly higher in patients with more invasive tumors (p < .001) and larger tumor size (p = .034). The 5-year disease-specific (DS) survival rate significantly correlated with micrometastasis, margin involvement, and depth of invasion in the univariate analyses. Multivariate Cox regression analysis confirmed a significant association between the 5-year DS survival rate and micrometastasis (hazard ratio [HR] = 7.89; 95% confidence interval [CI] = 1.09-57.14; p = .041) and margin involvement (HR = 11.68; 95% CI = 1.22-111.75; p = .033)., Conclusion: Micrometastasis was significantly correlated with the depth of invasion and tumor size in oral and oropharyngeal cancers. Furthermore, micrometastasis was associated with adverse outcomes. © 2015 Wiley Periodicals, Inc. Head Neck 38: E1777-E1782, 2016., (© 2015 Wiley Periodicals, Inc.)
- Published
- 2016
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250. Swallowing function in patients with vertical hemipharyngolaryngectomy for hypopharyngeal squamous cell carcinoma.
- Author
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Joo YH, Cho KJ, Park JO, Nam IC, Kim CS, Kim SY, and Kim MS
- Subjects
- Adult, Aged, Carcinoma, Squamous Cell surgery, Deglutition Disorders complications, Female, Follow-Up Studies, Humans, Hypopharyngeal Neoplasms surgery, Male, Middle Aged, Organ Sparing Treatments, Retrospective Studies, Surgical Flaps, Deglutition Disorders etiology, Esophageal Stenosis etiology, Gastrostomy statistics & numerical data, Hypopharynx surgery, Laryngectomy methods, Pneumonia, Aspiration etiology
- Abstract
Background: The purpose of this study was to evaluate the long-term swallowing function in patients with vertical hemipharyngolaryngectomy (VHPL) for hypopharyngeal cancer., Methods: A retrospective review of 30 patients followed for more than 2 years with VHPL between 1998 and 2011 was performed., Results: Five patients (16.7%) experienced gastrostomy tube placement, 4 patients (13%) had pharyngoesophageal stricture, and 13 patients (45%) had aspiration pneumonia. There was a significant difference in the fraction of gastrostomy tube placement among type II VHPL (35.7%), type I VHPL (0%), and type III VHPL (0%; p = .014). Gastrostomy tube dependence was significantly associated with flap size (larger than 70 cm(2) ; p = .043) and aspiration pneumonia (p = .009). A significant positive correlation was found between current smokers and aspiration pneumonia (p = .030)., Conclusion: Type II VHPL, large flap reconstruction, and aspiration pneumonia had predictable values for gastrostomy tube dependence. Smoking status correlated with aspiration pneumonia. Better counseling and vigilance concerning swallowing difficulties may be possible., (© 2015 Wiley Periodicals, Inc.)
- Published
- 2016
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