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OBJECTIVE We performed a systematic review and meta-analysis of randomized controlled trials (RCTs) that scrutinized the oncological benefits and postsurgical complications of total thyroidectomy (TT) plus prophylactic central neck dissection (pCND) versus TT alone among clinically node-negative (cN0) papillary thyroid cancer (PTC) patients. METHODS We screened five databases from inception to September 4, 2021 and evaluated the risk of bias of the eligible studies. We pooled dichotomous outcomes using the risk ratio (RR) with 95% confidence interval (CI). RESULTS Overall, we included 5 RCTs with low risk of bias comprising 795 patients (TT plus pCND = 410 and TT alone = 385). With regard to efficacy endpoint, the rate of structural loco-regional recurrence did not significantly differ between both groups (n = 4 RCTs, RR = 0.49, 95% CI [0.19, 1.27], P = .14). With regard to safety endpoints, the rates of hypoparathyroidism (n = 5 RCTs, RR = 1.48, 95% CI [0.73, 2.97], P = .27), recurrent laryngeal nerve injury (n = 5 RCTs, RR = 1.34, 95% CI [0.59, 3.03], P = .48), and bleeding (n = 3 RCTs, RR = 1.75, 95% CI [0.42, 7.26], P = .44) did not significantly differ between both groups. CONCLUSION For cN0 PTC patients, there was no significant difference between TT plus pCND and TT alone with regard to the rate of structural loco-regional recurrence or frequency of postsurgical complications. Adaptation of pCND in cN0 PTC patients should be contemplated by taking into consideration the clinical oncological benefits and rate of postsurgical adverse events. LEVEL OF EVIDENCE 1 Laryngoscope, 2021.

Primary thyroid lymphoma (PTL) comprises 5% of all thyroid malignancies. In this case series, we aim to review its clinical presentation, diagnosis, and treatment. We included five PTL patients. All were females (mean age of 59.8 years). All patients presented with a rapidly growing neck swelling, and only two had obstructive symptoms. All patients had solitary masses, aside from one patient who had two lesions. All were causing mass effect and two with invasion of the surrounding tissue. All were diagnosed with diffuse large B-cell lymphoma. Cytology examination for PTL demonstrates atypical lymphoid cells. Four patients in our series had chemotherapy and currently in remission. The fifth died early after the clinical presentation. Two had thyroid surgeries.

To conduct a scoping review of the literature on psychological interventions directed to identify primary prevention strategies for depression among adult head and neck cancer (HNC) patients.Systematic searches were conducted following Preferred Reporting Items for Systematic Reviews and Meta-Analysis Extension for Scoping Review including relevant studies within the PubMed, PsycINFO, and EMBASE databases. Two authors independently screened the searches and reviewed the included articles according to the predetermined eligibility criteria based on the PICOS format. Studies included subjects with previous or current diagnosis of depression were excluded. The risk of bias assessment of these trials was conducted following the Cochrane tool for assessing the risk of bias in randomized trials. The search was repeated prior to submission to ensure all current articles meeting criteria were included.The search yielded 875 studies. The title and abstract screen, followed by the review of full texts identified five articles that met inclusion criteria. Four were randomized controlled trials (RCT) and the fifth was a non-randomized but controlled study. Different psychosocial interventions were used, including psycho-educational interventions, psychosocial counseling, and pharmacotherapy. All studies established the diagnosis of depression or screened for the diagnosis using standardized psychiatric assessment tools, either Diagnostic and Statistical Manual of Mental Disorders criteria or validated patient reported outcome measures. The average follow-up periods after intervention was 9.8 months. There was a significant decrease in the incidence of depression or depressive symptoms favoring the intervention group in three out of the five studies that were included.Psychological interventions identified thus far studying primary prevention of depression in HNC patients show promising results. However, the paucity of data and heterogeneity of the interventions challenges the ability to compare the prevention modalities and outcomes. Future well-designed RCTs with large sample sizes are recommended to better conclude a result of effectiveness.

Background In this study, we aimed to determine the site of obstruction if surgical treatment is considered. Flexible nasopharyngoscopy is an invasive procedure currently used for the assessment of snoring and the level of obstruction. Here, we examine the role of Somnoscreen™ plus, a noninvasive cardiorespiratory polysomnographic device, in identifying the site of obstruction in patients presenting with snoring. Methodology This cross-sectional study was conducted in the Sleep Research Center at King Abdulaziz University Hospital. Polysomnography was conducted using Somnoscreen™ plus. All participants underwent flexible nasopharyngoscopy after polysomnography. Results Nasopharyngoscopy revealed that the most common site of obstruction was the nose and the soft palate (35.4%), followed by the soft palate alone (25%). Somnoscreen revealed that the site of obstruction was the nose and the soft palate in 18 (37.5%) patients and the nose alone in 16 (33.3%) patients. However, distal obstructions were not detected using Somnoscreen. The concordance of nasopharyngoscopy and Somnoscreen was 52.9%. However, it showed a discrepancy in identifying distal obstructions, which Somnoscreen™ plus failed to detect. Conclusions Somnoscreen appears to be sensitive for identifying proximal airway obstructions. The audio signal recordings can potentially be used as a tool to detect the site of airway obstruction in snoring; however, further studies are needed.

Sickle cell disease (SCD) typically manifests in early childhood as attacks of pain known as vaso-occlusive crises. Infection and hypoxemia have been linked with these recurrent episodes and with prolonged hospitalization in SCD patients. However, adenoids and tonsils as sources of infection and causes of hypoxemia have not been adequately investigated in association with vaso-occlusive crises in SCD. To assess the association between adenotonsillectomy and frequency of vaso-occlusive crisis in SCD patients who underwent this procedure at our Hospital, and between adenotonsillectomy and frequency of blood transfusions and emergency department and intensive care unit admissions. We used medical record data to conduct a retrospective review of SCD patients who underwent adenoidectomy and/or tonsillectomy between 2005 and 2017. Eligible subjects were assessed for frequency of vaso-occlusive crises, blood transfusions, and emergency department and intensive care unit admissions. Using the Wilcoxon signed rank test, we compared the frequencies of each outcome preoperatively and 1, 3, 5, and 10 years postoperatively. Of 524 records reviewed, 40 eligible patients were included in the study. Minimal reduction was observed in the frequency of vaso-occlusive crisis episodes within 1 and 3 years after adenotonsillectomy (p = 0.337 and p = 0.549, respectively). Although the 5- and 10-year postoperative vaso-occlusive crisis frequency tended to be higher than that in the preoperative period, none of the results reached statistical significance. The number of emergency department admissions showed a statistically significant increase 3 years postoperatively compared with that in the preoperative period (P = 0.043). There were no statistically significant differences in perioperative blood transfusion frequency or number of intensive care unit admissions in any period. Adenotonsillectomy in SCD patients does not seem to be related to the frequency of vaso-occlusive crises, blood transfusions, or emergency department or intensive care unit admissions. Prospective studies with larger sample sizes are recommended to further evaluate these findings.

Objective To carry out a meta-analysis of prospective literature comparing the clinical efficacy of elective neck dissection (END) vs observation (OBS) in patients with early-stage cT1/T2N0 tongue carcinoma. Design/setting/participants/outcome measures We systematically reviewed four databases from inception to 30-October-2020. We considered all studies meeting the following PICOS conditions: (a) Patients: early-stage cT1/T2N0 tongue carcinoma, (b) Intervention: END, (c) Comparator: OBS, (d) Outcomes: local tongue recurrence, cervical nodal recurrence, disease-specific survival (DSS) rate, and disease-free survival (DFS) rate and (e) Study design: prospective reports. We pooled dichotomous data as relative risks (RRs) with 95% confidence intervals (CIs). Results Four studies (one case-control study and three randomised controlled trials) met our inclusion criteria. There were 448 eligible patients (225 and 223 patients were treated with END and OBS, respectively). END significantly correlated with improved DSS rate (RR = 1.15, 95% CI: 1.04-1.27, P = .007). Nonetheless, there were no significant differences between END and OBS groups regarding the rates of local tongue recurrence (RR = 1.23, 95% CI: 0.50-3.03, P = .65), cervical nodal recurrence (RR = 0.45, 95% CI: 0.16-1.27, P = .13) and DFS rate (RR = 1.08, 95% CI: 0.91-1.27, P = .38). Pooled analysis for cervical nodal recurrence was heterogeneous, and sensitivity analysis revealed a significantly lower cervical nodal recurrence rate in favour of END group (RR = 0.30, 95% CI: 0.13-0.67, P = .004). Conclusion END correlated with a significant decrease in cervical nodal recurrence and improved DSS rate. END might be superior to OBS in patients with early-stage cT1/T2N0 tongue cancer.

Background Voice and swallowing disorders can create a profound psychosocial impact on the patient's quality of life. The focus of this study is to assess the psychosocial disabling effects on patients after total laryngectomy (TLP) using pre-validated surveys called the Voice Handicap Index 10 (VHI) for voice disorders and the Dysphagia Handicap Index (DHI) for swallowing disorders. Methodology This is a retrospective cohort study that was done on a total of 21 patients. The study was conducted at King Abdulaziz University Hospital between 2017 and 2022. The Cronbach's alpha value was used to evaluate internal consistency reliability. The relationship between DHI, VHI, and demographic and clinical variables was analyzed by correlation analysis. A p-value of0.05 was considered statistically significant, and all the tests were two-sided. Results The Cronbach's alpha coefficient satisfied the internal consistency reliability for VHI and DHI for both total and their subscale scores. For DHI, the total score and emotional subscale obtained an alpha of greater than 0.9, indicating excellent internal consistency, whereas both physical and functional alpha scores indicated good internal consistency (α = 0.888 and α = 0.863, respectively). For VHI, the total score and physical subscale of the VHI had excellent internal consistency (α = 0.957 and α = 0.937, respectively), while the functional and emotional subscales had good internal consistency (α = 0.865 and α = 0.894, respectively). The total DHI scores, as well as the functional subscale scores, were significant (p = 0.033, p = 0.025, respectively) in terms of self-reported dysphagia severity. A moderately severe group (69.00 ± 19.17) had higher mean total scores, whereas severe individuals had higher subscale mean scores according to self-reported dysphagia severity. Self-reported dysphagia severity was as follows: normal (n = 3, 14.3%), mild (n = 4, 19%), moderate (n = 8, 38.1%), and severe (n = 6, 28.6%). Conclusions The disability caused by voice and swallowing disorders can be evaluated by VHI and DHI which have been statistically validated as reliable tools to assess the effects of dysphagia and dysphonia on quality of life. Patients after laryngectomy have higher mean DHI and VHI overall and functional subscale scores. However, this study failed to establish any relationship between clinical and demographical characteristics of the patients with DHI and VHI index.

Background. Dentures are a common cause of inadvertent foreign body ingestion particularly in the elderly. Due to their radiolucent nature, they often present a diagnostic challenge to care providing physicians. Case Presentation. A 66-year-old female presented to our otolaryngology clinic with a 2-year history of dysphagia. Her physical examination was unremarkable. Computed tomography scan of the neck and barium swallow suggested Zenker diverticulum. She was planned for endoscopic diverticulotomy; however, during surgery, a foreign body was incidentally found and retrieved, which was a partial lower denture. The diverticulum resolved thereafter, and the patient's symptoms abated. Conclusion. The authors recommend evaluating the esophagus endoscopically first in cases of upper esophageal diverticular formation, even when planning an open repair approach, to rule out any concealed foreign bodies.

BACKGROUND Olfaction plays a critical role in our health, emotions, social life and safety, which is why olfactory dysfunction has a great impact on a person's life. This has been highlighted with the recent coronavirus disease 2019 (COVID-19) pandemic. Despite Arabic being the fifth most commonly spoken language and one of the six official languages of the United Nations, there is no Arabic version for an olfactory-specific quality of life assessment tool. METHOD The Questionnaire of Olfactory Disorders-Negative Statements (QOD-NS) is a validated questionnaire that assesses many aspects of a patient's daily life. We translated this questionnaire to the Arabic language following European Organisation for Research and Treatment of Cancer (EORTC) Quality of Life Group Translation Procedure guidelines. A pilot-testing of the Arabic version was done among 20 participants, 10 of whom were confirmed to have normosmia based on scoring at least 11/12 on the Sniffin' Sticks (SS) olfactory testing (Group 1) and another 10 participants who reported anosmia and scored less than 7/12 on the SS test. Patients could agree, partially agree, partially disagree, or disagree with each questionnaire statement. RESULTS The pilot study revealed that participants with confirmed anosmia had higher questionnaire scores compared to participants with normosomia (median 22 compared to 1, p value < 0.001). For each statement on the Arabic questionnaire, all questions scored at least 80% of intra-rater reliability, and the overall intra-rater reliability was 90%. CONCLUSION The Arabic translation of QOD-NS is a validated questionnaire that can be used both in academic and clinical practice.

Background Poorly differentiated thyroid cancer (PDTC) is now classified as a separate thyroid tumor entity. It has male predominance and poor prognosis compared to differentiated TC. Case We report a case of a patient with PDTC who was previously deemed inoperable. A trial of neoadjuvant lenvatinib therapy was given to the patient after that the tumor become operable and the surgery went successfully. Conclusions Lenvatinib is a feasible option in patients with inoperable TC and can stabilize the lesion size or even reduce it, leading to a more favorable surgical outcome.

Background Accurate preoperative radiological localization of parathyroid pathologies paves the way to enable less invasive surgical procedures. Results on the accuracy of the different diagnostic measures are conflicting. Also, little is known about the most common location of parathyroid lesions. This paper aims to determine the most common location of parathyroid adenoma and evaluate the diagnostic performance of radiological modalities such as ultrasonography, sestamibi scintigraphy/single-photon emission computerized tomography (SPECT), magnetic resonance imaging (MRI), and computed tomography (CT) scan for the preoperative localization of parathyroid pathologies. Methods This is a retrospective study. Data were collected from patients who underwent total or partial parathyroidectomy at King Abdulaziz University Hospital between January 2000 and March 2020. The parathyroid adenoma site was detected preoperatively by a radiological method and confirmed postoperatively by the histopathology report. The performance of each preoperative localizing radiological method was evaluated based on the accuracy in localizing parathyroid pathology. Results A total of 73 patients were included in the analysis, with females being the most common gender in the study at 64%. Only complete data files were included and incomplete data files were excluded. The most frequent mode of detecting parathyroid adenoma was a sestamibi/SPECT scan (62.5%) followed by a CT scan (50%), ultrasound (34.6%), and MRI (25%). The most common location of a parathyroid adenoma was the left side. Conclusion Sestamibi/SPECT is a frequent radiological method for detecting the parathyroid lesion site as compared with CT, MRI, and ultrasonography.

Background Rhinitis represents a global health problem, affecting 10%-20% of the population in Saudi Arabia. Topical intranasal corticosteroids (INCS) are widely used by otolaryngologists to treat patients with rhinitis for long periods. Although the effects of orally administered corticosteroids on intraocular pressure (IOP) and lens opacity are well established, the impact of INCS is not well defined. In the present study, we aimed to assess the effect of using INCS on IOP over a six-month period in patients with rhinitis. Methodology In this study, a questionnaire was distributed to 93 patients diagnosed with rhinitis in the Ear, Nose, and Throat Clinic of King Abdulaziz University Hospital, Saudi Arabia, between February and July 2019. Thereafter, each patient was evaluated in the Ophthalmology Clinic with optical coherence tomography of the optic nerve using Cirrus HD-OCT (Carl Zeiss Meditec, Inc., Dublin, CA, USA) optic disc scans, visual acuity testing, and Goldmann applanation tonometry. Pearson correlation coefficients and two-tailed tests of significance were used to assess the relationships between variables. Results All 93 patients were using a dose of two puffs at least twice daily for each nostril. Their IOPs, as depicted by Goldman applanation tonometry, were found to be within normal limits. Retinal nerve fiber layer thickness was also found to be normal in 95% of the participants. Conclusions Our study showed no correlation between INCS and IOP. As an increase in IOP can lead to glaucoma, our data demonstrate the safety profile of INCS use. For patients with rhinitis, this finding could change compliance to medication and reduce the burden of the disease.

Objectives To assess knowledge about human papillomavirus (HPV), vaccination, and HPV-related oropharyngeal cancer (OPC) and to evaluate HPV vaccine acceptability among a sample of undergraduate dental students. Methods All third- and fourth-year dental students enrolled in any of the dental schools in Jeddah, Saudi Arabia, were invited to participate in this cross-sectional study. In total, 500 students completed a self-administered questionnaire on HPV, HPV vaccines, and HPV-related OPC knowledge. HPV, HPV vaccine and HPV-related OPC knowledge scores were calculated. Associations of participants characteristics with the knowledge scores and with willingness to take the HPV vaccine were assessed. Results Of the participants, 62% had heard of HPV infections, and 57% of HPV vaccines. Average knowledge scores were low: HPV knowledge score 3.8±4.5 out of 16, HPV vaccination knowledge score 0.9±1.6 out of 7, OPC knowledge score 0.9±1.2 out of 5. Clinical-year students had better knowledge and were more willing to take the HPV vaccine than were preclinical-year students, as were those vaccinated for hepatitis B versus those not vaccinated for hepatitis B. Students with higher HPV knowledge scores were more willing to take the HPV vaccine (66%) than were those with lower scores (43%) (p=0.018). Only 4% of males and 12% of females reported taking the HPV vaccine. Of those who refused it, 51% cited lack of knowledge as the primary reason. Conclusions Knowledge about HPV, its vaccine, and HPV-related OPC is low among this sample of Saudi undergraduate dental students. Improving knowledge among them may increase their awareness, which could affect the care provided to patients. .

The role of vitamin D deficiency has been linked with recurrent upper respiratory tract infections, but its impact on the frequency of tonsillitis is not yet fully understood. The objective of this study is to determine the association between vitamin D deficiency and recurrent tonsillitis based on current literature.A systematic review was performed following the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guideline. Data were collected from online medical databases (PubMed, MEDLINE, EMBASE, and Cochrane Collaboration Registry of Controlled Trials).All studies addressing the association of vitamin D deficiency and recurrent tonsillitis prior to March 2019. The data were collected in different phases: screening review using search words and controlled vocabularies followed by detailed review of screened articles based on inclusion and exclusion criteria, then a full review that included screening the references of selected articles.Fifty-three studies were potentially eligible; of these, 4 publications met the inclusion criteria and were included in the quantitative synthesis. There was a statistically significant reduction of vitamin D levels in patients with recurrent tonsillitis as compared to healthy controls (mean difference, -10.71; 95% CI, -19.12 to -2.31;Vitamin D deficiency was present in patients with recurrent tonsillitis and might be associated with an increase in the risk of recurrent tonsillitis. There is a need to explore these findings via clinical trials based on large populations.

Background Hospital blood banks face the common challenge of maintaining an adequate supply of blood products to serve all potential patients while minimizing the need to discard expired blood products. This study aimed to determine the risk of blood transfusion during elective thyroid and parathyroid surgery and potential factors related to blood loss and risk of transfusion in these cases. Methods The study included all thyroid and parathyroid surgeries performed at King Abdulaziz University Hospital between January 2015 and December 2017. After exclusion of patients with incomplete data, 179 patients with complete data who had undergone thyroid and parathyroid surgery were analyzed. Results Of the179 patients included in this study, 33 (18.4%) were male. Overall, patients had a mean age and body-mass index of 44.55±13.67 years and 27.66±5.38 kg/m2, respectively. The mean duration of surgery was 168.48±90.69 minutes. None of the patients had a history of previous radiotherapy, bleeding disorder, or blood transfusion. Benign goiter was the most common finding (n=78, 43.6%), followed by papillary carcinoma (n=49, 27.4%). During surgery, most patients (n=136, 76.0%) experienced minimal blood loss. None of the patients in our cohort (n= 179) required any blood transfusion or products. Conclusion In this study, we aimed to audit the surgical blood-ordering and -transfusion practices associated with elective thyroid and parathyroid surgeries at our institution. These practices are intended to balance the availability of blood products with the avoidance of unnecessary wastage. In our study of patients who underwent elective thyroid and parathyroid surgeries, parathyroid surgeries, none required blood transfusion.

Background The global incidence of thyroid cancer (TC) has increased significantly over the past decades. In Saudi Arabia, it is the third most common cancer among adults. This study aims to review the clinical and histopathological characteristics of TC in Saudi Arabia and analyze the size trend over the years. Methods We conducted a retrospective chart review of all differentiated and poorly differentiated TC patients following up at a tertiary care center in the Western region of Saudi Arabia. All patients 11 years and older, diagnosed between 2004 - 2018, and with sufficient histopathological data were included. Follicular and poorly differentiated TC were categorized and tumor stage was allocated. We performed descriptive and size trend analysis. Results We had a total of 285 patients who qualified for inclusion. The mean age at diagnosis was 40.6 years, and 81.05% of patients were females. Papillary TC comprised 88.07% of these neoplasms, and most patients (89.12%) were at Stage I. Only papillary TC showed a gender difference in the age of the diagnosis. In men, the mean age at diagnosis of papillary TC was 46.98 ± 15.4 years, while in female patients, it was 39.02 ± 12.8 years (p-value = 0.0001). We did not find a trend toward smaller tumours in the more recent years in comparison to the early years (r = -0.083, p-value = 0.168). Conclusions TC is diagnosed at a younger age and larger sizes in Saudi Arabia in comparison to other countries. A gender difference was only noted with papillary TC in regard to the age of diagnosis. There was no trend toward smaller sizes of TC over the years.

Background With respect to patients with head and neck squamous cell carcinoma (HNSCC), posttreatment surveillance for distant disease has mostly focused on the lungs, as HNSCC distant metastasis occurs in this organ in 90% of HNSCC cases. Additionally, the incidence rate of primary tumors in the lungs is high due to the field cancerization of the entire upper aerodigestive tract. Objective Our cross-sectional survey study aims to evaluate the current beliefs and pulmonary screening practices of otolaryngology–head and neck surgeons across Saudi Arabia with respect to the posttreatment surveillance of HNSCC. Methods This nationwide cross-sectional survey was conducted among head and neck surgeon members of the Saudi Society of Otolaryngology from June 1 to June 30, 2020. A predesigned questionnaire was used for data collection, and a descriptive analysis was carried out. Results This study included 22 participants and had a 78% (22/28) response rate. This study found that the majority of participants (9/22, 41%) used lung radiography for routine lung screening during posttreatment follow-ups, whereas 32% (7/22) used low-dose computed tomography (CT; 7/22, 32%). With regard to the number of years for which participants perform lung screening during follow-ups, the majority of participants (17/22, 77%) reported 5 years, and only 9% (2/22) have performed lifelong lung screening. With regard to the frequency of lung screening, 77% (17/22) of participants conduct screening annually, 18% (4/22) conduct screening half-yearly, and 5% (1/22) conduct screening biennially. With regard to beliefs about the effectiveness of screening procedures in reducing lung cancer mortality rates during follow-ups, 36% (8/22) of participants believed them to be very effective or somewhat effective, 18% (4/22) did not know, and only 9% (2/22) believed that they were not effective. Conclusions The participants mainly used lung radiography (9/22, 41%), low-dose CT (7/22, 32%), or positron emission tomography/CT (6/22, 27%) as a routine lung screening method during the posttreatment follow-up of patients with head and neck cancer for 5 years (17/22, 77%) or 10 years (3/22, 14%), and only a small percentage of participants have performed lifelong lung screening (2/22, 9%). Lung screening was mostly conducted annually or half-yearly. Such screening was believed to be very effective or somewhat effective.

Patient: Female, 53 Final Diagnosis: Thyroid lipomatosis Symptoms: Dysphasia Medication: — Clinical Procedure: Total thyroidectomy Specialty: Otolaryngology Objective: Rare disease Background: Diffuse lipomatosis of the thyroid gland is a particularly rare histopathological condition characterized by diffuse fatty infiltration within the thyroid stroma. Case Report: We report a case of a 53-year-old woman who presented with a 2-year history of massive neck goiter and mild dysphagia. A computed tomography (CT) scan revealed heterogeneous enhancing of an enlarged thyroid gland with left lobe cranial extension and compression of the pharynx, and caudal bilateral retrosternal growth. The patient underwent total thyroidectomy and histopathological examination revealed mature fatty tissue diffusely distributed throughout the thyroid gland. Excision of the gland was somewhat challenging due to the very thin thyroid capsule and recurrent protrusion of fat from the capsule. Conclusions: Diffuse thyroid lipomatosis is an extremely rare histopathological condition characterized by diffuse fatty infiltration in thyroid stroma. Despite its rarity, it should be considered in the differential diagnoses of a patient presenting with a goiter.

Kikuchi–Fujimoto disease is a benign disease of self-limiting course characterized by lymphadenopathy that is often mistaken clinically as lymphoma or infectious lymphadenitis. To prevent such a mistake, a clinical and pathological correlation is recommended. In this retrospective study, we are documenting the clinical and pathological features of this disease through the last 15 years (2001-2016) in King Abdulaziz University Hospital; and comparing results with that of international findings. From a total number of 1805 lymph nodes sent for histopathological examination during that period, only 9 cases had been diagnosed as Kikuchi–Fujimoto disease. Three (33%) cases were 20 years old and under; five (56%) cases were in the ages between 20 to 40 years old and only one (11%) was above 40 years old. Eight (89%) cases were females. Regarding the outcome, all cases showed complete recovery and there was no recurrence. Only two histological phases were seen, namely proliferative and necrotizing phases.

Background/Aims: Gastroesophageal reflux disease (GERD) is a common condition that can lead to significant morbidity. Laryngopharyngeal reflux (LPR) is a distinct clinical entity that can occur simultaneously with GERD, necessitating additional treatment measures. The degree of overlap and clinical predictors of LPR among patients with GERD remains unknown. We aim to measure the prevalence of LPR in patients with GERD and identify clinical predictors. Patients and Methods: We performed a cross-sectional study involving patients with confirmed GERD according to the GERD questionnaire (GerdQ) using the reflux symptom index (RSI). Data on demographics, comorbidities, past and current medications, and GERD-related lifestyle measures were documented. The prevalence of LPR was calculated. Linear and logistic regression analyses were conducted to correlate GerdQ and RSI, and to identify clinical predictors of LPR, respectively. Results: A total of 80 patients with confirmed GERD were consecutively recruited and surveyed. Mean age was 43 (±16) and 60% were females. The majority of patients were Saudis (51%) and only 24% were smokers. The mean duration of GERD was 7 (±4.4) years and the average body mass index (BMI) was 36 ± 22. Sixty-six percent of the patients consumed coffee on regular basis. On simple and multiple linear regression analyses, a strong, positive correlation was observed between the GerdQ and RSI scores (coefficient = 1.13, 95%CI = 0.39–1.86), and ipratropium bromide inhaler was positively associated with RSI scores (coefficient = 13.12, 95%CI = 0.16–26.09). LPR was identified in 57 patients (71%). On simple and multiple logistic regression analyses, GerdQ scores (OR = 1.78, 95%CI = 1.13–2.80), BMI (OR = 1.07, 95%CI = 1.01–1.14), duration of GERD in years (OR = 1.42, 95%CI = 1.04–1.93), and the type of gender (OR = 49.67, 95%CI = 1.32–1870) appeared to increase the risk of LPR, whereas coffee consumption (OR = 0.0005, 95%CI = 1.82e–06, 0.13) appeared to be negatively associated with LPR. Conclusions: Contradictory to what is frequently reported, LPR commonly occurs and positively correlates with GERD. Several modifiable clinical predictors of LPR might exist, which highlight the importance of performing a complete clinical assessment of the patients with reflux symptoms.

Objectives: To assist the endoscopic localization of the lacrimal sac (LS) relative to nearby landmarks. Methods: This is a descriptive prospective anatomical study. Sixteen lateral nasal walls were dissected endoscopically to identify and localize the LS between October and November 2015. Multiple measurements were obtained from the NS to the anterior and posterior walls of the LS, as well as to the middle turbinate axilla (MTA) and from the MTA to the LS borders. Results: The average distance from the NS to the anterior border of the LS was 42.0 mm and the posterior border was 48.5 mm. The average widths of the LS were 7.55 mm superiorly, and 6.6 mm inferiorly representing a mathematical proof that the LS is a trapezoid shape. The mean distance from the NS to the MTA was 47.3 mm. Nine of the 16 lacrimal sacs (56.3%) were found to be partially overlapped by the MTA. The LS was only totally overlapped and lying posterior to the MTA in one side (6.3%), while in 6 sides (37.5%) the LS lay anterior to the MTA. Conclusion: Endoscopic surgeons should be aware of the location of the LS relative to nearby landmarks, particularly the MTA. Representing a mathematical proof that the LS is wider at it upper part than lower part best presented as a trapezoid shape. We have provided additional measurements that may prove useful in cases of difficult exposure. Saudi Med J 2017; Vol. 38 (3): 245-250 doi: 10.15537/smj.2017.3.15937 How to cite this article: Alherabi A, Marglani O, Herzallah I, Shaibah H, Alaidarous T, Alkaff H, et al. Endoscopic anatomy of the lacrimal sac for dacryocystorhinostomy. A cadaveric study. Saudi Med J . 2017 Mar;38(3):245-250. doi: 10.15537/smj.2017.3.15937.

Ectopic thyroid gland is a rare condition where the thyroid is not placed in the pre-tracheal region. Majority of cases are commonly located at the lingual portion. The malignant shift of ectopic thyroid is considered a rare manifestation with a challenging surgical approach. Here we report our management and surgical approach of a patient with papillary microcarcinoma of sublingual thyroid gland presented to our facility.

Objectives: To determine the diagnostic accuracy of fine needle aspiration (FNA) for detecting malignant parotid tumors. Methods : We conducted a retrospective study of all patients diagnosed with benign or malignant parotid gland tumors in King Abdulaziz University Hospital, Jeddah, Saudi Arabia, between January 2004 and May 2015. The records of 65 subjects were obtained. Histopathological findings and data from FNA examinations were obtained from medical records. Twenty-three subjects were excluded due to missing FNA, histopathology results or both. The sensitivity, specificity, negative predictive value, and positive predictive value of FNA for detecting malignant lesions were estimated and compared with the gold standard, histopathology. Results : The specimens of 5 cases were insufficient for diagnosis; therefore, 38 cases were diagnosed by FNA and had histopathological reports. Three cases were diagnosed positive for cancer using histopathology and missed by FNA, 3 were diagnosed as malignant lesions using both FNA and histopathology, and 32 cases were determined benign based on histopathology and FNA analysis. The total prevalence of parotid malignancies was 15.8%. The sensitivity of FNA for detecting malignancy was 50%, and the specificity was 100%; with a positive predictive value of 100% and negative predictive value of 91.4%. Conclusion : Fine needle aspiration is a highly specific, but only moderately sensitive test. We support the use of this method as an initial tool for diagnosing parotid gland malignancies, as it is a safe, rapid, and painless procedure, compared to histopathology. Saudi Med J 2017; Vol. 38 (10): 1000-1006 doi: 10.15537/smj.2017.10.20988 How to cite this article: Marzouki HZ, Altabsh MA, Albakrei MO, Al-Khatib TA, Merdad MA, Farsi NJ. Accuracy of preoperative fine needle aspiration in diagnosis of malignant parotid tumors. Saudi Med J . 2017 Oct;38(10):1000-1006. doi: 10.15537/smj.2017.10.20988.

Objectives/Hypothesis The treatment for most advanced head and neck cancers (stage III and IV) usually includes radiation, and the most common side effect of this treatment modality is a permanent decrease in salivary production. Xerostomia is a devastating complication that significantly affects patients' quality of life by interfering with functions of taste, mastication, deglutition, and speech production. Treatment of xerostomia is varied, but one of the strategies developed by our group was to preserve one submandibular gland by surgically transferring it to the submental space and shielding it from the full dose of radiation. This procedure is proven to reduce the rate of radiation-induced xerostomia, but its main disadvantage is that it is contraindicated in oral cavity cancer. This study describes and evaluates a modification of the submandibular gland transfer (SGT) procedure, where the submandibular gland contralateral to the disease process is relocated to the parotid region. This modification has the potential of expanding the benefits of submandibular gland transfer procedures to patients with oral cavity cancers. Study Design Prospective feasibility study. Methods This study involved nine patients with a new diagnosis of advanced head and neck cancer undergoing major head and neck cancer resection with postoperative adjuvant radiation therapy. The new modified salivary gland transfer procedure was performed on all nine patients, and the glands total dose received with radiation therapy was assessed. Results All the modified SGT procedures were successful with no post-operative complications. The radiation oncology team has been able to successfully localize the transferred submandibular glands and shield them from the radiation beam postoperatively. Conclusions We have successfully demonstrated that surgical transfer of a submandibular salivary gland to the parotid region is feasible, surgically viable, oncologically sound, and does not interfere with radiation therapy. Level of Evidence 4 Laryngoscope, 2016

Kimura disease is a chronic inflammatory disease that mainly manifests as a lump in the cervical region. Although the underlying pathophysiology is not clear yet, the diagnosis can be established based on specific histopathological characteristics. The first case of this disease was described in China, as well as the majority of subsequent cases that were also described in the Far East countries made Kimura disease traditionally a disease of adult patients of Asian descent. This report describes the occurrence of Kimura disease in pediatric non-Asian patient with a similar clinicopathologic presentation.

Background Hospital blood banks face the common challenge of maintaining an adequate supply of blood products to serve all potential patients while minimizing the need to discard expired blood products. This study aimed to determine the risk of blood transfusion during elective thyroid and parathyroid surgery and potential factors related to blood loss and risk of transfusion in these cases. Methods The study included all thyroid and parathyroid surgeries performed at King Abdulaziz University Hospital between January 2015 and December 2017. After exclusion of patients with incomplete data, 179 patients with complete data who had undergone thyroid and parathyroid surgery were analyzed. Results Of the179 patients included in this study, 33 (18.4%) were male. Overall, patients had a mean age and body-mass index of 44.55±13.67 years and 27.66±5.38 kg/m2, respectively. The mean duration of surgery was 168.48±90.69 minutes. None of the patients had a history of previous radiotherapy, bleeding disorder, or blood transfusion. Benign goiter was the most common finding (n=78, 43.6%), followed by papillary carcinoma (n=49, 27.4%). During surgery, most patients (n=136, 76.0%) experienced minimal blood loss. None of the patients in our cohort (n= 179) required any blood transfusion or products. Conclusion In this study, we aimed to audit the surgical blood-ordering and -transfusion practices associated with elective thyroid and parathyroid surgeries at our institution. These practices are intended to balance the availability of blood products with the avoidance of unnecessary wastage. In our study of patients who underwent elective thyroid and parathyroid surgeries, parathyroid surgeries, none required blood transfusion.

Background To determine the impact of Human Papillomavirus (HPV) status on speech, swallowing, and quality of life (QOL) outcomes after surgical treatment of oropharyngeal cancer (OPSCC). Methods A retrospective review of a prospectively collected database of all patients with OPSCC diagnosed and treated from 1998 to 2009. Speech, swallowing, and quality of life data were gathered at 3 different evaluation points. HPV status was determined using p16 positivity as a surrogate marker. Univariate and multivariate statistical analyses were performed to identify whether p16 status is a significant predictor of functional outcome and QOL. Results One hundred twelve patients with OPSCC and known p16 status were treated with primary surgery between 1998 and 2009, with mean age of 56 years. Out of those patients 63 (56%) were p16 positive. Speech intelligibility remained high at 1-year post operation (95.4%). Only 11.5% of the patients required a feeding tube at 1 year after surgery to maintain their daily caloric requirements and the risk of aspiration after surgery was not significant (p = 0.097). There was no statistically or clinically significant difference in speech, swallowing ability, swallowing safety and QOL outcomes between p16-positive and negative OPSCC. Conclusions Surgically treated OPSCC patients demonstrate excellent swallowing function and can achieve excellent speech perception. P16 status may not be predictive of functional outcomes or QOL in surgically treated OPSCC.

Objective nbsp The aim of the research was to find out if administration of low dose Aspirin mg had a protective impact against age related hearing loss Methods nbsp We performed a retrospective non interventional study of all patients at King Abdulaziz University hospital KAUH who had age related hearing loss A total of patients were collected looking at different variables among them A telephone questionnaire was included to collect missing information We further classified them based on the use of low dose Aspirin and degree of hearing loss by looking at their last audiometric data Lastly we selected patients who had multiple audiometric data to see the effect of low dose aspirin on their hearing Results A total of patients with age related hearing loss were included in this study out of them were males from which were on low dose aspirin and were females from which were on low dose Aspirin With classification of their degree of hearing loss the majority of patients on low dose aspirin had mild to moderate hearing loss while the majority of patients not on Aspirin had normal to mild degree of hearing loss When we looked at the differences between intensities of each frequency of multiple readings of patients which showed that of them were on low dose aspirin and all of them showed preservation in their hearing However patients who were not on Aspirin of them showed preservation in their hearing and did not have any effect on hearing preservation Conclusion nbsp Low dose aspirin did not show hearing protection when we looked at one audiometric data done for patients with age related hearing loss However when multiple audiometric data were compared among patients depending whether they are using low dose Aspirin or not there was a positive impact of low dose aspirin on the preservation of hearing Studies with larger sample sizes are needed to support our observation

Background:Peritonsillar abscess (PTA) is the most common deep infection of neck space that occurs in adults and is potentially life threatening if not treated appropriately. The surgical treatment of peritonsillar abscess that is not complicated with upper airway obstruction still remains controversial. Objectives: This review attempts to explore the controverseries between different types of management and compare the efficacy of needle aspiration, tonsillectomy and/or incision and drainage. Methodology: This study was done in King Abdulaziz University. All researches, between 1988 to 2015 were recruited and reviewed in this study. Results and conclusion: Studying the three accepted methods of draining: incision and drainage, abscess tonsillectomy, or needle aspiration, Incision and drainage is an efficient and safe procedure to treat peritonsillar abscess. As well as it is superior to Needle aspiration in terms of the post-procedure pain score. It can be performed as the first-line treatment of peritonsillar abscess. Quinsy tonsillectomy can offer several advantages, by allowing full evacuation of the abscess cavity, effectively relieving symptoms, but holds risk in general anesthesia intubation. and also higher post-operative complication like Peritonsillar abscess make it not a favorable step.

Patient: Male, 59 Final Diagnosis: Benign carotid body tumor Symptoms: Neck mass Medication: — Clinical Procedure: — Specialty: Otolaryngology Objective: Rare disease Background: Carotid body tumors are rare tumors that arise from the paraganglionic cells of the carotid body. They are usually benign, requiring surgical resection as the treatment of choice. Case Report: We present a case of a 59-year-old man with a benign left carotid body tumor that progressed to a very large size, compromised the patient’s airway, completely encased the carotid vessels, vagus and hypoglossal nerves ipsilaterally, and reached the contralateral carotid vessels and ipsilateral skull base. Because of the cranial extension of the tumor, the patient had to undergo preoperative endovascular coiling of the carotid vessels prior to total excision of the tumor. Conclusions: Due to the critical location of carotid body tumors, their vascularity, and high risk of neurovascular complications, surgical resection can be quite challenging, especially when the tumor is large. We propose an approach to managing large parapharyngeal tumors by endovascular occlusion of the internal carotid artery above the skull base. Further, a suggestion is made to add a category to Shamblin’s classification – Shamblin IV – for patients with skull base extension requiring preoperative endovascular intervention.

Purpose Nasopharyngeal cancer (NPC) is the most common head and neck cancer in Saudi Arabia. This study reports the locoregional disease control and survival outcomes in patients with NPC treated in King Abdulaziz University Hospital. Methods Patients treated for NPC between June 2007 and October 2014 were retrospectively reviewed. Demographic information, clinicopathologic variables, and chemotherapy data were collected and analyzed. Cumulative survival and disease control rates were calculated by Kaplan-Meier product-limit actuarial method. Results Thirty-nine patients with NPC were reviewed. Thirty-five (90%) patients received definitive radiotherapy (RT) and four (10%) had palliative RT. Mean prescribed dose for definitive RT was 68 Gy (range, 60 to 70.2 Gy), delivered with mean doses per fraction of 1.9 Gy (range, 1.8 to 2.1 Gy). After a median follow-up of 15 months (range, 1 to 84 months), 22 (63%) patients who underwent definitive RT were disease free and 13 (37%) were still with disease. During this period, seven (18%) patients died of the disease; five (13%) of them received definitive RT. After 2 years’ follow-up, the actuarial estimate rates were: 85.7% for local control, 91.4% for nodal control, and 85.7% for distant control. Conclusion Our study showed a disease with clinical behavior similar to what has been observed in East and Southeast Asia. Further it explored the neoadjuvant chemotherapy approach in treating NPC with results that are comparable to literature. However, little is known about the molecular pathogenesis of this disease in this region, and further research integrating clinical and molecular biomarkers is required.

Background The purpose of this study was to investigate the possible epidemiological association between oropharyngeal carcinoma and anogenital tumors. Methods Population-based demographic and pathologic data on all male patients diagnosed with oropharyngeal squamous cell carcinoma (OPSCC) and anogenital cancer between 1980 and 2011 in the province of Alberta was collected. The risk of association between anogenital cancers and OPSCCs was estimated. Results Between 1980 and 2011, a total of 2105 male patients were diagnosed with OPSCC and 914 with anogenital cancers. Only 5 patients were diagnosed with both. Conclusion In our male population, there was no significant association between anogenital and OPSCCs. © 2016 Wiley Periodicals, Inc. Head Neck, 2016

The treatment for most advanced head and neck cancers (stage III and IV) usually includes radiation, and the most common side effect of this treatment modality is a permanent decrease in salivary production. Xerostomia is a devastating complication that significantly affects patients' quality of life by interfering with functions of taste, mastication, deglutition, and speech production. Treatment of xerostomia is varied, but one of the strategies developed by our group was to preserve one submandibular gland by surgically transferring it to the submental space and shielding it from the full dose of radiation. This procedure is proven to reduce the rate of radiation-induced xerostomia, but its main disadvantage is that it is contraindicated in oral cavity cancer. This study describes and evaluates a modification of the submandibular gland transfer (SGT) procedure, where the submandibular gland contralateral to the disease process is relocated to the parotid region. This modification has the potential of expanding the benefits of submandibular gland transfer procedures to patients with oral cavity cancers.Prospective feasibility study.This study involved nine patients with a new diagnosis of advanced head and neck cancer undergoing major head and neck cancer resection with postoperative adjuvant radiation therapy. The new modified salivary gland transfer procedure was performed on all nine patients, and the glands total dose received with radiation therapy was assessed.All the modified SGT procedures were successful with no post-operative complications. The radiation oncology team has been able to successfully localize the transferred submandibular glands and shield them from the radiation beam postoperatively.We have successfully demonstrated that surgical transfer of a submandibular salivary gland to the parotid region is feasible, surgically viable, oncologically sound, and does not interfere with radiation therapy.4 Laryngoscope, 126:2492-2496, 2016.

Introduction: Career satisfaction is vital to attain the superlative quality of work; dissatisfaction can consequently impact physicians' performance. This study was conducted to ascertain the level of physicians' satisfaction at work as well as identifying influencing factors. Methods: This cross-sectional study was conducted at King Abdulaziz University Hospital, Jeddah, Saudi Arabia. Participants were clinicians serving in different specialties for 2 years or more after finishing their training. Job satisfaction was assessed through a self-administered questionnaire. Response to each question to each question was devised using 5-point Likert scale on a wide range of demographics, job characteristics, and five main domains of job satisfaction. Data analysis was executed using SPSS package (v. 24). Results: A total of 159 clinicians participated in our study. Majority of the participants were Saudi (145, 91.2%), with 113 male (71%). Age ranged between 30 and 40 years. 140 were married (88%). In general, more than one-third of the physicians were dissatisfied with their overall job condition 60 (38.0%). The most important prognosticators of career satisfaction were found to be age, years of experience, and type of practice (public vs. private or both). When a multivariate analysis, regression model was applied, “clinicians satisfaction with workload” and “time and energy spent on administrative tasks” were found to have a negative effect on job satisfaction. Conclusion: More than one-third of the clinicians were generally dissatisfied with their overall job condition. Goals should be directed to improve the elements that adversely affect career satisfaction. Necessary interventions are indicated to improve clinicians' performance in clinical practice, maximize the quality of care, and maintain stable workforce.

Objective: The objective of this study was to assess the level of awareness regarding primary home management of epistaxis among high- and middle-school students and their teachers. Materials and Methods: This cross-sectional study was conducted in December 2018 by distributing a paper-based questionnaire to high-and middle-school students and teachers in Jeddah, Saudi Arabia. Results: The study included 706 individuals (53.4% males and 46.6% females) with a mean age of 16.58 ± 5.57 years. Based on the correlation between our variables, 57.5% of the participants had a good knowledge score, while only 3.5% had an excellent score. Male high-school students were significantly more knowledgeable than female middle-school students. Conclusion: Awareness of first-aid management of epistaxis was fair. However, more integrated educational resources should be made available for the general population and school students and teachers.

The purpose of this study was to investigate the possible epidemiological association between oropharyngeal carcinoma and anogenital tumors.Population-based demographic and pathologic data on all male patients diagnosed with oropharyngeal squamous cell carcinoma (OPSCC) and anogenital cancer between 1980 and 2011 in the province of Alberta was collected. The risk of association between anogenital cancers and OPSCCs was estimated.Between 1980 and 2011, a total of 2105 male patients were diagnosed with OPSCC and 914 with anogenital cancers. Only 5 patients were diagnosed with both.In our male population, there was no significant association between anogenital and OPSCCs. © 2016 Wiley Periodicals, Inc. Head Neck 38: E2100-E2102, 2016.

Objective: Facial nerve paralysis is one of the most devastating complications after parotid gland surgery. We aimed to determine the prevalence and risk factors of facial palsy after parotidectomy.Methods: We performed a retrospective review of the data from 54 patients who underwent parotid surgery between 2004 and 2015 at a tertiary medical care center. The prevalence of facial nerve paralysis and possible risk factors (demographic characteristics, tumor characteristics, and operative factors) associated with postoperative paralysis were assessed. Categorical variables were evaluated using the Fisher’s exact test, and a two-tailed t-test was used to assess the associations between continuous and binary outcome variables.Results: The postparotidectomy prevalence of temporary and permanent facial nerve paralysis were 26% and 13%, respectively. Tumors involving both lobes were significantly associated with permanent facial nerve paralysis (p = .048). Long operative duration (> 164 minutes) was associated with both temporary and permanent facial nerve paralysis (p = .040).Conclusions: Operative factors such as operative duration and tumor characteristics such as bilobal involvement increased the risk of postparotidectomy facial nerve paralysis. Such factors should be considered to reduce the risk of palsy in patients undergoing parotidectomy.

To determine the usefulness of the VELscope in detecting malignant and premalignant oral cavity lesions.Prospective clinical study.Head and neck oncology clinic at an academic tertiary care centre.Eighty-five patients with a history of smoking, alcohol use, and/or head and neck cancer were recruited into the study. The VELscope was used to examine patients' oral cavities after a clinical examination. Biopsies were then taken from suspicious areas.Of the 85 patients included in the study, 33 underwent biopsies prompted by a clinical examination, the VELscope, or both. Biopsy results that showed invasive malignancy or dysplasias were considered positive. Five positive biopsies for premalignant lesions were detected only by the VELscope and were not visible on clinical examination. On the other hand, only one positive biopsy for a premalignant lesion was detected by the clinical examination only and not seen on the VELscope. Seven positive biopsies were detected by both methods. This indicates that the diagnostic yield from a regular examination was 47% (95% CI 23-72) and that the diagnostic yield from the addition of the VELscope was an additional 31% (95% CI 11-59). Sensitivity and specificity for the VELscope were 92% and 77%, respectively.The Velscope may add sensitivity to the clinical examination and be a useful adjunct in high-risk patients.

To determine the most common location of parathyroid adenomas.Data from 147 patients who underwent parathyroidectomy for primary hyperparathyroidism in Montreal at a McGill University teaching hospital between January 2001 and January 2008 were reviewed retrospectively. Patients with histopathologic confirmation of parathyroid hyperplasia were excluded from the study (n = 26). The 121 patients with confirmed adenomas were grouped according to the locations of the tumour into right superior, right inferior, left superior, left inferior, and ectopic.The left inferior parathyroid glands were the most common site of adenomas. This was the case for 50 patients (41.32% [mean 0.41; 95% CI 0.324-0.506]). The right inferior parathyroid glands were the site in 40 patients (33.06% [mean 0.33; 95% CI 0.248-0.422]). The remainder of the adenomas were distributed as follows: the left superior in 19 patients (15.7% [mean 0.157; 95% CI 0.097-0.234]), the right superior in 10 patients (8.26% [mean 0.0826; 95% CI 0.040-0.147]), and the ectopic in 2 patients (1.65% [mean 0.0165; 95% CI 0.002-0.058]).In this study, the most common site of adenoma was the left inferior parathyroid gland. This information provides parathyroid surgeons with a starting point when imaging fails to localize the site of the adenoma, which allows for the possibility of minimally invasive surgery especially if used in conjunction with intraoperative parathyroid hormone.

To determine whether sentinel lymph node (SLN) biopsy can accurately predict central compartment metastasis in patients with differentiated thyroid carcinoma.Prospective clinical study.Academic tertiary care center.Ninety-eight patients (82 women and 16 men; mean age, 48.3 years) underwent a total thyroidectomy and central compartment dissection.Peritumoral injection of methylene blue dye, 1%, followed by SLN biopsy.The final pathology report established the presence of metastasis among SLNs and lymph nodes that did not stain blue (non-SLNs [NSLNs]).Differentiated thyroid carcinoma was found in 75 of 98 patients (77%). Seventy of 75 patients with differentiated thyroid carcinoma presented with SLNs and/or NSLNs within the central compartment. Fifteen of 70 patients had metastasis-positive SLNs, while 55 had metastasis-negative SLNs. Six of 15 patients with positive SLNs also had positive NSLNs. No patients with negative SLNs were found to have positive NSLNs. Sentinal lymph node status was a highly significant predictor of NSLN result (Fisher exact test, P.001). The accuracy, sensitivity, specificity, and positive and negative predictive values of SLN biopsy were 87%, 100%, 86%, 40%, and 100%, respectively.To our knowledge, this is the largest series of SLN biopsy in patients with differentiated thyroid carcinoma. Our experience suggests that this is an accurate and noninvasive means to identify subclinical lymph node metastasis. Because negative SLNs correlate strongly with a negative central compartment (100% in this study, P.001), this technique can be used as an intraoperative guide when determining the extent of surgery necessary in cervical level VI.

Background Computed tomography (CT) is used to evaluate the human tracheobronchial tree because of its unsurpassed ability to visualize the airway and surrounding structures. To establish an ideal animal model for studying subglottic stenosis, we assessed the size and morphology of the normal rabbit’s laryngotracheal airway by helical CT. We measured luminal dimensions at the levels of the arytenoid and cricoid cartilages and the first, third, and eighth tracheal rings. At all levels, the axial slices were used to calculate the maximum anteroposterior (AP) dimension, transverse dimension, and cross-sectional areas. We measured the tracheal length from the cricoid to the third and eighth tracheal rings on sagittal reformation. We assessed the hyoid, thyroid, cricoid, arytenoid, and tracheal rings for the presence of calcific or soft tissue densities. We also addressed the presence or absence of pre-epiglottic and paraglottic fat. Results The mean AP tracheal dimension ± standard deviation (SD) was 8.6 ± 0.5 mm at the arytenoid level, 8.2 ± 0.7 mm at the cricoid level, and 7.7 ± 0.2 mm at the first tracheal ring level. The transverse tracheal dimension ±SD was 5.3 ± 0.1 mm at the arytenoid level, 5.5 ± 0.5 mm at the cricoid level, and 6.1 ± 0.6 mm at the first tracheal ring level. The mean tracheal area ±SD was 35.7 ± 2.2 mm2 at the arytenoid level, 35.8 ± 5.1 mm2 at the cricoid level, and 39.2 ± 4.3 mm2 at the first tracheal ring level. The tracheal length ±SD was 10.7 ± 2.3 mm from the cricoid to the third tracheal ring and 19.1 ± 1.14 mm to the eighth tracheal ring. There was complete calcification of the hyoid in all rabbits. Only two rabbits showed complete thyroid, arytenoid, or tracheal ring calcification. The remaining airway components were otherwise either uncalcified or partially calcified. The uvula, epiglottis, aryepiglottic fold, vallecula, piriform sinus, true/false vocal cords, and pre-epiglottic/paraglottic fat were not seen in any rabbit. Conclusions Helical CT investigation provides good, highly definitive anatomic details of the larynx and trachea in rabbits. Such results may be used in further evaluation of the normal airway and in cases of subglottic stenosis.