3,850 results on '"Lobe"'
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2. Feasibility of using the postauricular-groove approach without endoscopic assistant for excision of parotid tumors. Results from a series of 58 cases
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Yi Shen, Wang Liang, Bing Guo, Zhiwei Zheng, Jian Sun, and Xin Yang
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medicine.medical_specialty ,business.industry ,Parotidectomy ,Deep lobe ,Facial nerve ,Lobe ,Surgery ,Parotid gland ,medicine.anatomical_structure ,Otorhinolaryngology ,medicine ,Parotid tumors ,Paralysis ,Oral Surgery ,medicine.symptom ,business ,Vas score - Abstract
Aim of the study To evaluate the efficacy and preliminary outcomes of using a postauricular-groove approach without endoscopic assistance for the excision of parotid tumors. Case series Patients who underwent parotidectomy using a postauricular-groove incision were selected for this study. For patients in which parotidectomy was difficult, namely, for tumors located in the deep lobe area, the parotid gland sternocleidomastoid space was fully utilized, and the tumor was resected from the posterior plane. A total of fifty-eight patients with parotid tumor were enrolled and divided into superior lobe group (n=46) and deep lobe group (n=12). The difference in operation time (94 vs 119 min) and postoperative drainage (20.18 vs 45.33 mL) was statistically significant between the tumors in the superficial and deep lobes. However, postoperative cosmetic VAS score was 10 (extremely satisfied) for all patients. The incidence of transient facial nerve paralysis was comparable (8.7% vs 16.7%), and all of them resolved spontaneously within 3 months. No recurrence of tumors was found in either group in the median follow-up interval of 26.45 months (range 22.2-35.3 months), which was comparable to the result using the conventional “S” approach. Conclusion After making full use of the parotid gland sternocleidomastoid space, the postauricular-groove approach demonstrated satisfactory facial nerve protection, as well as easy maneuverability without the risk of surgical complications for tumors located in the deep lobe area. Importantly, the postauricular-groove approach showed excellent cosmetic outcomes for all patients and should be considered an alternative approach for parotidectomy of selected cases.
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- 2022
3. Lobe-Specific Mediastinal Staging in cN0–cN1 Non–Small Cell Lung Cancer
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Marc Fortin, Thibaud Soumagne, Julien Guinde, Pascalin Roy, Paula A. Ugalde, and Simon Martel
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Pulmonary and Respiratory Medicine ,medicine.medical_specialty ,Lung Neoplasms ,business.industry ,Mediastinum ,medicine.disease ,Lobe ,Mediastinal staging ,medicine.anatomical_structure ,Carcinoma, Non-Small-Cell Lung ,medicine ,Humans ,Lymph Nodes ,Non small cell ,Radiology ,Lung cancer ,business ,Neoplasm Staging ,Retrospective Studies - Published
- 2022
4. Outcomes of Right and Left Hepatic Arterial Anastomosis in Right Lobe Living Donor Liver Transplant
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Inbaraj Balradja, Shaleen Agarwal, Rajesh Dey, Aarathi Vijayashanker, Bhargava Ram Chikkala, Subash Gupta, Yuktansh Pandey, and Rahul Rahul
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Adult ,Male ,Transplantation ,medicine.medical_specialty ,Right hepatic artery ,business.industry ,Incidence (epidemiology) ,Anastomosis, Surgical ,Constriction, Pathologic ,Anastomosis ,Living donor ,Lobe ,Arterial anastomosis ,Liver Transplantation ,Surgery ,Hepatic Artery ,Treatment Outcome ,medicine.anatomical_structure ,Living Donors ,medicine ,Humans ,Female ,business ,Bile leak ,Artery - Abstract
OBJECTIVES Living donor liver transplant is a complex surgery with well-known complications. Here, we report the use of the right and left hepatic arteries of the recipient for anastomosis and the effects of each procedure on overall outcomes and any associated short-term or long-term biliary complications. MATERIALS AND METHODS This was a prospective observational study with long-term follow-up of 200 patients (100 in the right hepatic artery group and 100 in the left hepatic artery group). RESULTS The average donor age was 28.9 years in the left hepatic artery group and 30.9 years in the right hepatic artery group. Most of the donors (60%) were female. Overall, there was 10.5% mortality in the early postoperative period. Among survivors, there were more late strictures in the right hepatic artery group (29.7% vs 22.7%). Bile leak (P = .42), mortality (P = .71), and incidence of late-onset biliary strictures (P = .83) were less common in the left hepatic artery group. CONCLUSIONS Left artery anastomosis was found to be technically safe and feasible and did not adversely affect patient outcome compared with right artery anastomosis. Left hepatic artery anastomosis may also reduce the incidence of the biliary complications compared with the right hepatic artery anastomosis.
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- 2022
5. Hippocampal spindles and barques are normal intracranial electroencephalographic entities
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Anto Bagic, Mirela V. Simon, Helweh Hussein, Alan Bush, Vasileios Kokkinos, Birgit Frauscher, R. Mark Richardson, and Alexandra Urban
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Adult ,Male ,Hippocampal formation ,Hippocampus ,Stereoelectroencephalography ,Young Adult ,Seizure onset ,Epilepsy ,Physiology (medical) ,Humans ,Medicine ,Hippocampus (mythology) ,Epilepsy surgery ,Surgical treatment ,business.industry ,Middle Aged ,medicine.disease ,Brain Waves ,Sensory Systems ,Lobe ,medicine.anatomical_structure ,Epilepsy, Temporal Lobe ,Neurology ,Anesthesia ,Female ,Electrocorticography ,Epilepsies, Partial ,Neurology (clinical) ,business - Abstract
Objective To assess whether hippocampal spindles and barques are markers of epileptogenicity. Methods Focal epilepsy patients that underwent stereo-electroencephalography implantation with at least one electrode in their hippocampus were selected (n = 75). The occurrence of spindles and barques in the hippocampus was evaluated in each patient. We created pairs of pathologic and pathology-free groups according to two sets of criteria: 1. Non-invasive diagnostic criteria (patients grouped according to focal epilepsy classification). 2. Intracranial neurophysiological criteria (patient’s hippocampi grouped according to their seizure onset involvement). Results Hippocampal spindles and barques appear equally often in both pathologic and pathology-free groups, both for non-invasive (Pspindles = 0.73; Pbarques = 0.46) and intracranial criteria (Pspindles = 0.08; Pbarques = 0.26). In Engel Class I patients, spindles occurred with similar incidence both within the non-invasive (P = 0.67) and the intracranial criteria group (P = 0.20). Barques were significantly more frequent in extra-temporal lobe epilepsy defined by either non-invasive (P = 0.01) or intracranial (P = 0.01) criteria. Conclusions Both spindles and barques are normal entities of the hippocampal intracranial electroencephalogram. The presence of barques may also signify lack of epileptogenic properties in the hippocampus. Significance Understanding that hippocampal spindles and barques do not reflect epileptogenicity is critical for correct interpretation of epilepsy surgery evaluations and appropriate surgical treatment selection.
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- 2021
6. Uniportal video-assisted thoracoscopic surgery left upper lobectomy in 9 steps
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David R. Jones, Susan Kelly, Jae Ho Chung, and Gaetano Rocco
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Pulmonary and Respiratory Medicine ,medicine.medical_specialty ,business.industry ,medicine.medical_treatment ,Operating team ,medicine.disease ,Lobe ,Squamous carcinoma ,medicine.anatomical_structure ,Video-assisted thoracoscopic surgery ,medicine ,Left upper lobe ,Adenocarcinoma ,Surgery ,Radiology ,Lung cancer ,business ,Special Issue of Invited Presentations: Thoracic: Lung Cancer: Invited Video Atlas ,Uniportal video assisted thoracoscopic surgery - Abstract
Video Video 1 Incision and port placement of 4 to 5 cm at the fifth or sixth intercostal space between the anterior and the midaxillary line. Video available at: https://www.jtcvs.org/article/S2666-2507(21)00717-3/fulltext. Video 2 Dissection of the anterior mediastinal pleura and division of the superior pulmonary vein. Video available at: https://www.jtcvs.org/article/S2666-2507(21)00717-3/fulltext. Video 3 Dissection of the apical mediastinal pleura and division of the anterior and apical branches of the pulmonary artery. Video available at: https://www.jtcvs.org/article/S2666-2507(21)00717-3/fulltext. Video 4 Dissection and division of the anterior oblique fissure and division of the lingular branches of the pulmonary artery. Video available at: https://www.jtcvs.org/article/S2666-2507(21)00717-3/fulltext. Video 5 Dissection and division of the interlobar fissure and the posterior branch of the pulmonary artery. Video available at: https://www.jtcvs.org/article/S2666-2507(21)00717-3/fulltext. Video 6 Dissection and division of the left upper lobe bronchus. Video available at: https://www.jtcvs.org/article/S2666-2507(21)00717-3/fulltext. Video 7 Lymph node dissection (subaortic, hilar, subcarinal, or inferior pulmonary ligament) and division of the inferior pulmonary ligament. Video available at: https://www.jtcvs.org/article/S2666-2507(21)00717-3/fulltext. Video 8 Specimen retrieval. Video available at: https://www.jtcvs.org/article/S2666-2507(21)00717-3/fulltext. Video 9 Chest tube placement. Video available at: https://www.jtcvs.org/article/S2666-2507(21)00717-3/fulltext.
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- 2021
7. Intact Removal of Orbital Lobe Tumors of the Lacrimal Gland, With or Without Lateral Wall Osteotomy
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Kaveh Vahdani, Richard T. Parker, and Geoffrey E. Rose
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Periosteum ,business.industry ,medicine.medical_treatment ,General Medicine ,Lacrimal gland ,Anatomy ,Osteotomy ,Lobe ,Tumor excision ,Ophthalmology ,medicine.anatomical_structure ,Palpebral fissure ,medicine ,Surgery ,Lateral wall ,business ,Orbit (anatomy) - Abstract
PURPOSE To examine the necessity for lateral osteotomy for intact removal of tumors within the orbital lobe of the lacrimal gland. METHODS Patients who, between 1992 and 2020, were scheduled for intact excision of well-defined masses within the orbital lobe of the lacrimal gland were identified from an orbital database. A retrospective review of the clinical records was performed and details of the tumor size obtained from histopathological reports. The first patients in the series had lateral osteotomy, whereas later, there was a shift toward osteotomy-free tumor excision through a skin-crease incision. The latter approach required isolation of the gland's orbital lobe on an intact sheet of periosteum, an anterior "flip" of the mass (out of the orbit, past the orbital rim) "hinged" at the isthmus between the orbital and palpebral lobes, and finally a division of the isthmus to release the intact mass. RESULTS Clinical details were available for 100 patients (50 male), with 56 tumors removed using lateral osteotomy and 44 without. The mean age at surgery was 50.3 years with osteotomy (median, 51.8; range, 19-85 years) and 51.1 years without (median, 50.3; range, 11-81 years; P = 0.81). There were no postoperative complications in either group. Although the range of tumor volumes was similar in the two groups (1.6-15.0 ml with osteotomy; 0.9-15.1 ml without), the average volume was somewhat greater in those having osteotomy (mean, 6.4 ml) as compared with those without (mean, 4.6 ml; P = 0.0016). Inadvertent rupture of the tumor occurred once in each group, with tumors of similar small size. CONCLUSIONS In many cases, large masses within the orbital lobe of the lacrimal gland can be safely removed intact, using the described flip technique without the need for lateral wall osteotomy.
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- 2021
8. Fissure adjacent partial lobe atelectasis in primary ciliary dyskinesia
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Loraine Fabri, Katelyn Tadd, André Schultz, Shivanthan Shanthikumar, Philip J. Robinson, and Lucy Morgan
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Adult ,Pulmonary Atelectasis ,medicine.medical_specialty ,Atelectasis ,Air trapping ,Sputum culture ,otorhinolaryngologic diseases ,medicine ,Humans ,Child ,Lung ,Primary ciliary dyskinesia ,Bronchiectasis ,medicine.diagnostic_test ,Kartagener Syndrome ,business.industry ,medicine.disease ,Lobe ,respiratory tract diseases ,medicine.anatomical_structure ,Lung disease ,Pediatrics, Perinatology and Child Health ,Sputum ,Radiology ,medicine.symptom ,Tomography, X-Ray Computed ,business ,Ciliary Motility Disorders - Abstract
AIM Establishing the underlying cause in a child with chronic suppurative lung disease (CSLD) allows for targeted treatment and screening for associated complications. One cause of CSLD is primary ciliary dyskinesia (PCD). Testing for PCD requires specialist expertise which is not widely available. Computed tomography (CT) scans are commonly performed when assessing CSLD. Identifying PCD-specific signs on CT would help clinicians in deciding when to refer for specialist testing. One potential PCD-specific sign we have observed is fissure adjacent partial lobe atelectasis (FAPLA). We aimed to assess if FAPLA is commonly found in CT of PCD patients. METHODS Fifty-eight CT scans from 42 adult and child PCD patients were analysed. The presence and distribution of FAPLA were noted, and its association to sputum culture and other signs commonly seen in CSLD (bronchiectasis, bronchial wall thickening, air trapping and mucus plugging). RESULTS FAPLA was found in 13 of 40 participants in their earliest CT scan. The prevalence of FAPLA was similar in children and adults. FAPLA involved the right middle lobe in all 13 cases and was systematically associated with ≥1 other structural change. There was no association between FAPLA and bacterial isolation from sputum. CONCLUSION FAPLA was found in 32.5% PCD scans, without difference between children and adults in terms of frequency. Future work will determine if it is a PCD-specific sign by assessing whether it is also found in other CSLD processes and analysing more scans from children with PCD to determine how early this sign develops.
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- 2021
9. Selective deep lobe parotidectomy via retroauricular hairline (Roh's) incision for deep lobe parotid pleomorphic adenoma
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Jong-Lyel Roh
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medicine.medical_specialty ,Surgical Wound ,Adenoma, Pleomorphic ,Sweating, Gustatory ,Deep lobe ,Pleomorphic adenoma ,Postoperative Complications ,Paralysis ,medicine ,Humans ,Parotid Gland ,General Dentistry ,Retrospective Studies ,business.industry ,Parotidectomy ,medicine.disease ,Facial nerve ,Lobe ,Parotid Neoplasms ,Parotid gland ,Surgery ,stomatognathic diseases ,medicine.anatomical_structure ,Parotid Pleomorphic Adenoma ,Otorhinolaryngology ,Neoplasm Recurrence, Local ,medicine.symptom ,business - Abstract
OBJECTIVE Deep lobe parotid tumour is commonly removed with the covering superficial lobe of parotid gland. Total or subtotal parotidectomy leads to an increase in surgical morbidity. This study evaluated recurrence and function after selective deep lobe parotidectomy via retroauricular hairline (Roh's) incision for pleomorphic adenoma. MATERIALS AND METHODS Twenty-eight patients with deep lobe parotid pleomorphic adenomas underwent selective deep lobe parotidectomy with preservation of the superficial lobe and the facial lobe via Roh's incision. Each patient was evaluated with any complications, cosmetic and salivary functions and local recurrence. RESULTS Superficial lobe-preserving surgery via Roh's incision was successfully applied to all patients without injury to the facial nerve and the Stensen's duct for a median operation time of 65 min. Facial nerve paralysis was found only temporarily in 9 (32%) patients, and other complications were minimal. None of the patients had postoperative Frey's syndrome. Salivary secretory function in the operated side was well preserved. No recurrence was found in the patients for a median follow-up of 94 months. CONCLUSIONS Selective deep lobe parotidectomy via Roh's incision is a reliable option of treatment for deep lobe parotid pleomorphic adenoma.
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- 2021
10. Large aortopulmonary collateral artery exclusively supplying the lower lobe of left lung in an infant with common arterial trunk with aortic dominance with confluent pulmonary arteries
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Pranav Subbaraya Kandachar, Abdullah Al Farqani, Sunny Zacharias, Eapen Thomas, and Salim Al Maskary
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Pulmonary and Respiratory Medicine ,medicine.medical_specialty ,Arterial trunk ,business.industry ,medicine.disease ,Lobe ,Intracardiac injection ,Lesion ,medicine.anatomical_structure ,Heart failure ,medicine.artery ,Internal medicine ,medicine ,Cardiology ,Thoracic aorta ,Surgery ,medicine.symptom ,Cardiology and Cardiovascular Medicine ,business ,Dominance (genetics) ,Artery - Abstract
INTRODUCTION Common arterial trunk with aortic dominance has well-developed bilateral pulmonary arterial arborization without any essential major aortopulmonary collateral arteries (MAPCAs), whereas "solitary" arterial trunk is characterized by collateral arterial supply to all bronchopulmonary segments and absent pulmonary arteries. CASE REPORT We report a term female neonate with common arterial trunk with aortic dominance with confluent pulmonary arteries with a large MAPCA as the sole blood supply to the lower lobe of the left lung. RESULTS Initial diagnostic workup missed this MAPCA from the descending thoracic aorta. It was suspected during surgery due to massive left atrial return and confirmed by cardiac catheterization study in the early postoperative period and treated successfully by unifocalization. DISCUSSION A large essential MAPCA supplying an entire lobe in the common arterial trunk with aortic dominance has not been described. It can present as heart failure and inability to wean off the ventilator in the early postoperative period following intracardiac repair. CONCLUSION This is a case hitherto undescribed and possibly falling outside the well-entrenched classifications of the common arterial trunk and a large MAPCA could be an addition to the list of lesion modifiers. Our experience with this case underlines the importance of a thorough and open-minded approach to the initial imaging assessment of even well-described conditions.
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- 2021
11. A case of tuberculosis of the rare azygos lobe of the right lung
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Sandeep Singh Awal, Hitesh Goyal, Som Subhro Biswas, and Sampreet Kaur Awal
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Azygos lobe ,medicine.medical_specialty ,Lung ,Tuberculosis ,RC705-779 ,business.industry ,Azygos fissure ,RC86-88.9 ,Medical emergencies. Critical care. Intensive care. First aid ,medicine.disease ,Asymptomatic ,Lobe ,Diseases of the respiratory system ,medicine.anatomical_structure ,Case report ,Medicine ,Cyst ,Radiology ,Anatomical variant ,medicine.symptom ,business ,Abscess ,Bulla (amulet) - Abstract
Background The azygos lobe is a rare anatomical variant seen in the upper lobe of right lung. It occurs during embryological development due to the failure of posterior cardinal vein to migrate supero-medially. It is often an incidental finding on imaging and is asymptomatic in majority of cases. Tuberculosis involving the azygos lobe is extremely rare. Only a few cases of tuberculosis involving the azygos lobe have been reported in literature. Case presentation We present a rare case report of tuberculosis infection involving the azygos lobe in a 57-year-old male with history of chronic cough, fever, hemoptysis, and weight loss. Conclusions The azygos lobe is usually asymptomatic, but it may be misdiagnosed as bulla, lung cyst, or abscess. In rare cases it may be associated with certain pathology such as tuberculosis, other infections, and lung cancer. Hence, it is pertinent for a radiologist to be aware of this variant when reporting chest imaging cases.
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- 2021
12. Transarterial chemoembolisation plus stereotactic body radiotherapy as conversion therapy for large right lobe hepatocecullar carcinoma
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Lam Tang Yu, Wong Wai Man, Cheung Chin Cheung, and Lee Ching Ching
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medicine.medical_specialty ,medicine.anatomical_structure ,business.industry ,Carcinoma ,medicine ,Surgery ,Radiology ,medicine.disease ,business ,Stereotactic body radiotherapy ,Lobe - Published
- 2021
13. STATIC CHARACTERISTICS OF OFFSET 8-LOBE JOURNAL BEARINGS
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Stanisław Strzelecki
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Offset (computer science) ,Optics ,medicine.anatomical_structure ,business.industry ,medicine ,business ,Geology ,Lobe - Abstract
The 8-lobe journal bearings have found application in the bearing systems of spindles of grinding machines. The design of bearings and the large number of lobes and oil grooves assures good cooling conditions of bearing. These bearings can be manufactured as the bearings with cylindrical, non-continuous operating surfaces separated by six lubricating grooves, bearings with the pericycloidal shape of the bearing bore, and as offset journal bearing. This paper presents the results of the computation of static characteristics of an offset 8-lobe journal bearing operating under the conditions of an aligned axis of journal and bush, adiabatic oil film, and at the static equilibrium position of journal. Different values of bearing length to diameter ratio, relative clearance, and lobe relative clearance were assumed. Reynolds' energy and viscosity equations were solved by means of an iterative procedure. Adiabatic oil film, laminar flow in the bearing gap, and aligned orientation of journal in the bearing were considered.
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- 2021
14. The difference in postoperative pulmonary functional change between upper and lower thoracoscopic lobectomy
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Wataru Nishio, Shinya Tane, Yusuke Fujibayashi, Sanae Kuroda, Mai Kitazume, Yoshitaka Kitamura, Daisuke Takenaka, and Kenji Kimura
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Pulmonary and Respiratory Medicine ,Spirometry ,medicine.medical_specialty ,Lung Neoplasms ,Lung ,medicine.diagnostic_test ,business.industry ,medicine.disease ,Lobe ,Respiratory Function Tests ,Pulmonary function testing ,Surgery ,medicine.anatomical_structure ,Upward displacement ,Forced Expiratory Volume ,Functional change ,medicine ,Thoracoscopy ,Humans ,Pneumonectomy ,Cardiology and Cardiovascular Medicine ,Lung cancer ,business - Abstract
OBJECTIVES Through 3-dimensional lung volumetric and morphological analyses, we aimed to evaluate the difference in postoperative functional changes between upper and lower thoracoscopic lobectomy. METHODS A total of 145 lung cancer patients who underwent thoracoscopic upper lobectomy (UL) were matched with 145 patients with lung cancer who underwent thoracoscopic lower lobectomy (LL) between April 2012 and December 2018, based on their sex, age, smoking history, operation side, and pulmonary function. Spirometry and computed tomography were performed before and 6 months after the operation. In addition, the postoperative pulmonary function, volume and morphological changes between the 2 groups were compared. RESULTS The rate of postoperative decreased and the ratio of actual to predicted postoperative forced expiratory volume in 1 s were significantly higher after LL than after UL (P CONCLUSIONS Pulmonary function after thoracoscopic LL was superior to that after UL because the upward displacement and the pulmonary reserves of the remaining lobe appeared more robust after LL.
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- 2021
15. Irreversible Homonymous Hemianopia Associated with Severe Hyperglycemia and Cerebral Hyperperfusion: A Case Report and Literature Review
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Ryo Itabashi, Yuya Kobayashi, Yuichi Kawabata, Yukako Yazawa, and Takuya Saito
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Male ,medicine.medical_specialty ,Case Report ,Brain damage ,030204 cardiovascular system & hematology ,Electroencephalography ,Single-photon emission computed tomography ,03 medical and health sciences ,Epilepsy ,0302 clinical medicine ,Cortex (anatomy) ,Internal Medicine ,medicine ,Humans ,Aged ,Tomography, Emission-Computed, Single-Photon ,medicine.diagnostic_test ,single-photon emission computed tomography ,business.industry ,General Medicine ,medicine.disease ,Magnetic Resonance Imaging ,Lobe ,medicine.anatomical_structure ,Hyperglycemia ,Arterial spin labeling ,Hemianopsia ,homonymous hemianopia ,epilepsy ,030211 gastroenterology & hepatology ,Occipital Lobe ,Radiology ,medicine.symptom ,business ,hyperperfusion ,Emission computed tomography - Abstract
A 68-year-old man was admitted to our department because of left incomplete homonymous hemianopia accompanied by hyperglycemia. Both T2-weighted and diffusion-weighted imaging revealed a low signal intensity along the subcortex and high signal intensity along the cortex on the right parietal and occipital lobes. Furthermore, arterial spin labeling and single-photon emission computed tomography showed hyperperfusion at the right parieto-occipital lobe. However, the electroencephalography result was normal. Hyperperfusion improved after controlling the blood glucose levels; nevertheless, homonymous hemianopia remained. We suspect that the irreversible brain damage was attributable to hyperperfusion associated with long-term hyperglycemia.
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- 2021
16. Imaging of Acute Stroke patient with Covid-19: A serial case
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Wisniardhy Pradana and Yuyun Yueniwati
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Intracerebral hemorrhage ,medicine.medical_specialty ,Coronavirus disease 2019 (COVID-19) ,business.industry ,Ischemia ,Infarction ,medicine.disease ,Lobe ,Intraventricular hemorrhage ,medicine.anatomical_structure ,Embolism ,medicine ,cardiovascular diseases ,Radiology ,business ,Stroke - Abstract
Background: Coronavirus Disease 2019 (COVID-19) has been declared as a pandemic in March 2020 by WHO. Apart from respiratory symptoms, COVID-19 is also associated with various neurological manifestations, one of which is stroke. We reported three cases with diagnosis of stroke in confirmed COVID-19 patients. Case Presentation: Head CT scan without contrast in the three reported cases showed different types of strokes. The first case showed ischemia in the right insular lobe and right parietal lobe. The second case showed intracerebral hemorrhage in the left thalamus and intraventricular hemorrhage, whereas the third case showed acute infarction in right frontotemporal lobe, right lentiform nucleus, right insular cortex, that supports prelenticulostriate segment I MCA embolism. Conclusion: CT scan is an important imaging modality in stroke cases both in COVID-19 and non-COVID-19 cases. CT scans are good at detecting the presence of bleeding, widely available, faster to operate, and less expensive than MRI. The types of stroke in COVID-19 patients can appear as different types of stroke. Generally, it appears as ischemic stroke, but hemorrhagic stroke can also occur with a less frequent occurrence. Further research is needed to explain the exact correlation between stroke and COVID-19.
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- 2021
17. Predictive value of CT imaging findings in COVID-19 pneumonia at the time of first-screen regarding the need for hospitalization or intensive care unit
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Guray Husmen, Filiz Tuzuner, Oner Dikensoy, Neval Erozan, Ceyda Kirisoglu, Ahmet Necati Sanli, Aytug Altundag, Deniz Esin Tekcan Sanli, and Duzgun Yildirim
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medicine.medical_specialty ,law.invention ,Lesion ,Chest Imaging ,law ,Internal medicine ,Intensive care ,Parenchyma ,medicine ,Humans ,Lung ,Retrospective Studies ,SARS-CoV-2 ,business.industry ,COVID-19 ,Retrospective cohort study ,Pneumonia ,medicine.disease ,Intensive care unit ,Lobe ,Hospitalization ,Intensive Care Units ,medicine.anatomical_structure ,medicine.symptom ,Tomography, X-Ray Computed ,business - Abstract
PURPOSE: In this study, we aimed to reveal the relationship between initial lung parenchymal involvement patterns and the subsequent need for hospitalization and/or intensive care unit admission in coronavirus disease 2019 (COVID-19) positive cases. METHODS: Overall, 231 patients diagnosed with COVID-19 as proven by PCR were included in this study. Based on the duration of hospitalization, patients were divided into three groups as follows: Group 1, patients receiving outpatient treatment or requiring hospitalization
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- 2021
18. Strategy for Selective Middle Hepatic Vein Reconstruction in Living Donor Liver Transplantation Using Right Lobe Graft: A Retrospective Observational Study
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Bong-Wan Kim, Mi-Na Kim, Taegyu Kim, Sung Yeon Hong, Hyun Young Lee, and Hee-Jung Wang
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Transplantation ,Right hepatic vein ,medicine.medical_specialty ,business.industry ,Retrospective cohort study ,Hepatic Veins ,medicine.disease ,Severity of Illness Index ,Lobe ,Liver Transplantation ,Surgery ,End Stage Liver Disease ,Liver disease ,medicine.anatomical_structure ,Liver ,Propensity score matching ,Living Donors ,medicine ,Humans ,Vein reconstruction ,Vein ,Living donor liver transplantation ,business ,Retrospective Studies - Abstract
Background The aim of this study was to verify the safety and feasibility of our selection criteria for middle hepatic vein (MHV) reconstruction in living donor liver transplantation (LDLT) using right lobe grafts. Methods A total of 153 LDLTs were performed using right lobe grafts in a tertiary hospital from 2006 to 2016. Among them, 52 cases without MHV reconstruction were compared with 101 recipients who underwent LDLT using right lobe graft with MHV reconstruction. Both groups were compared regarding indications for reconstruction, short-term and long-term complications, operative details, and outcomes. Results The two groups differed only in cold ischemic time (108.19 ± 49.81 minutes vs 146.37 ± 58.74 minutes) preoperatively. Short-term posttransplant outcomes, long-term overall survival, and long-term disease-free survival showed no significant differences between the 2 groups. After propensity score matching for both groups with and without MHV reconstruction to eliminate selection bias, the 2 groups were comparable. Conclusions We found that our selection criteria for performing MHV reconstruction in LDLT using right lobe graft were feasible and safe. A routine MHV reconstruction is not necessary if the right lobe graft graft-to-recipient weight ratio is ≥1.0, right hepatic vein draining territory volume is ≥0.8, and recipient Model for End-Stage Liver Disease score is
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- 2021
19. The liver twist: A case of accessory liver lobe torsion presenting after mild trauma
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Anil Nagavalli, Allene S. Burdette, James H. Birkholz, Stephen Polanski, and Christine M. Peterson
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Torsion ,Pathology ,medicine.medical_specialty ,R895-920 ,Case Report ,Accessory liver lobe ,030218 nuclear medicine & medical imaging ,Medical physics. Medical radiology. Nuclear medicine ,03 medical and health sciences ,Magnetic resonance imaging ,0302 clinical medicine ,Ultrasound ,otorhinolaryngologic diseases ,medicine ,Radiology, Nuclear Medicine and imaging ,Surgical emergency ,Computed tomography ,medicine.diagnostic_test ,business.industry ,Torsion (gastropod) ,Hepatic tissue ,Lobe ,body regions ,medicine.anatomical_structure ,Liver ,Male patient ,Minor trauma ,Accessory liver ,business ,030217 neurology & neurosurgery - Abstract
An accessory liver lobe is a congenital anomaly of hepatic tissue most commonly due to embryonic heteroplasia. Rarely, accessory liver lobes can undergo torsion and present as an acute surgical emergency. Although common in certain animals, there are only a few reported cases of accessory lobe torsion in humans. We report a multi-modality radiographic diagnosis of an acute torsion and subsequent infarct of an accessory liver lobe following minor trauma in a 29-year old male patient.
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- 2021
20. Regional Cerebellar Volume Loss Predicts Future Disability in Multiple Sclerosis Patients
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Vladimir S. Fonov, Till Sprenger, Stefano Magon, Ludwig Kappos, Jens Wuerfel, Charidimos Tsagkas, Katrin Parmar, Laura Gaetano, Yvonne Naegelin, Cristina Granziera, Michael Amann, and D. Louis Collins
- Subjects
medicine.medical_specialty ,Cerebellum ,Neurology ,medicine.diagnostic_test ,business.industry ,Multiple sclerosis ,Magnetic resonance imaging ,medicine.disease ,Lobe ,Atrophy ,medicine.anatomical_structure ,Internal medicine ,medicine ,Cardiology ,Cerebellar atrophy ,Neurology (clinical) ,business ,Pathological - Abstract
Cerebellar symptoms in multiple sclerosis (MS) are well described; however, the exact contribution of cerebellar damage to MS disability has not been fully explored. Longer-term observational periods are necessary to better understand the dynamics of pathological changes within the cerebellum and their clinical consequences. Cerebellar lobe and single lobule volumes were automatically segmented on 664 3D-T1-weighted MPRAGE scans (acquired at a single 1.5 T scanner) of 163 MS patients (111 women; mean age: 47.1 years; 125 relapsing–remitting (RR) and 38 secondary progressive (SP) MS, median EDSS: 3.0) imaged annually over 4 years. Clinical scores (EDSS, 9HPT, 25FWT, PASAT, SDMT) were determined per patient per year with a maximum clinical follow-up of 11 years. Linear mixed-effect models were applied to assess the association between cerebellar volumes and clinical scores and whether cerebellar atrophy measures may predict future disability progression. SPMS patients exhibited faster posterior superior lobe volume loss over time compared to RRMS, which was related to increase of EDSS over time. In RRMS, cerebellar volumes were significant predictors of motor scores (e.g. average EDSS, T25FWT and 9HPT) and SDMT. Atrophy of motor-associated lobules (IV-VI + VIII) was a significant predictor of future deterioration of the 9HPT of the non-dominant hand. In SPMS, the atrophy rate of the posterior superior lobe (VI + Crus I) was a significant predictor of future PASAT performance deterioration. Regional cerebellar volume reduction is associated with motor and cognitive disability in MS and may serve as a predictor for future disease progression, especially of dexterity and impaired processing speed.
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- 2021
21. Hippocampal atrophy and quantitative EEG markers in mild cognitive impairment in temporal lobe epilepsy versus extra-temporal lobe epilepsy
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Ahmed Esmael and Mohammed El-Sherif
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medicine.medical_specialty ,Neurology ,medicine.diagnostic_test ,business.industry ,Montreal Cognitive Assessment ,Dermatology ,General Medicine ,Electroencephalography ,Audiology ,Quantitative electroencephalography ,medicine.disease ,Lobe ,Temporal lobe ,Psychiatry and Mental health ,Epilepsy ,medicine.anatomical_structure ,Medicine ,Verbal fluency test ,Neurology (clinical) ,business - Abstract
Cognitive impairment in temporal lobe epilepsy is widely acknowledged as one of the most well-known comorbidities. This study aimed to explore cognitive impairment and to determine the potential clinical, radiological, and quantitative electroencephalography markers for cognitive impairment in temporal lobe epilepsy patients versus extra-temporal lobe epilepsy. Forty-five patients with temporal lobe epilepsy and forty-five patients with extra-temporal lobe epilepsy were recruited for an administered digit span test, verbal fluency test, mini-mental state examination, digital symbol test, and Montreal cognitive assessment. Also, they were subjected to magnetic resonance imaging assessment for hippocampal atrophy and a quantitative electroencephalography assessment for electroencephalography markers (median frequency, peak frequency, and the alpha-to-theta ratio). Patients with extra-temporal lobe epilepsy showed non-significant higher epilepsy durations and a higher frequency of seizures. Temporal lobe epilepsy patients showed a more statistically significant family history of epilepsy (37.7%), more history of febrile convulsions (13.3%), higher hippocampal atrophy (17.8%), and lower cognitive scales, especially mini-mental state examination and Montreal cognitive assessment; lower digital symbol test, verbal fluency test, and backward memory of digit span test. Also, temporal lobe epilepsy patients had a strong negative correlation with electroencephalography markers: median frequency, peak frequency, and the alpha-to-theta ratio (r = − 0.68, P
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- 2021
22. Scalable quorum-based deep neural networks with adversarial learning for automated lung lobe segmentation in fast helical free-breathing CTs
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Michael Lauria, Bradley Stiehl, Anand P. Santhanam, Jonathan G. Goldin, Kamal Singhrao, Daniel A. Low, and Igor Barjaktarevic
- Subjects
Artificial neural network ,Computer science ,business.industry ,Biomedical Engineering ,Health Informatics ,Pattern recognition ,General Medicine ,Function (mathematics) ,Computer Graphics and Computer-Aided Design ,Lobe ,Computer Science Applications ,Set (abstract data type) ,medicine.anatomical_structure ,Sørensen–Dice coefficient ,Scalability ,medicine ,Radiology, Nuclear Medicine and imaging ,Surgery ,Segmentation ,Computer Vision and Pattern Recognition ,Artificial intelligence ,business ,Generator (mathematics) - Abstract
Fast helical free-breathing CT (FHFBCT) scans are widely used for 5DCT and 5D Cone Beam imaging protocols. For quantitative analysis of lung physiology and function, it is important to segment the lung lobes in these scans. Since the 5DCT protocols use up to 25 FHFBCT scans, it is important that this segmentation task be automated. In this paper, we present a deep neural network (DNN) framework for segmenting the lung lobes in near real time. A total of 22 patient datasets (550 3D CT scans) were used for the study. Each of the lung lobes was manually segmented and considered ground-truth. A supervised and constrained generative adversarial network (CGAN) was employed for learning each set of lobe segmentations for each patient with 12 patients designated for training data. The resulting generator DNNs represented the lobe segmentations for each training dataset. A quorum-based algorithm was then implemented to test validation data consisting of 10 separate patient datasets (250 3D CTs). Each of the DNNs predicted their corresponding lobes for the validation data, and equal weights were given to the 12 generator CGANs. The quorum process worked by selecting the weighted average result of all 12 CGAN results for each lobe. When evaluated against ground-truth segmentations, the quorum-based lobe segmentation was observed to have average structural similarity index, normalized cross-correlation coefficient, and dice coefficient values of 0.929, 0.806, and 0.814, respectively, compared to values of 0.911, 0.698, and 0.696, respectively, using a conventional strategy. The proposed quorum-based approach computed segmentations with clinically acceptable accuracy in near real time using a multi-GPU-based computing setup. This method is scalable as more patient-specific CGANs can be added to the quorum over time.
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- 2021
23. Shaping of Two-Lobe Light Fields by Means of Combined Two-Section Optical Elements
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S. A. Samagin, D. V. Prokopova, and Svetlana P. Kotova
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Section (fiber bundle) ,Physics ,medicine.anatomical_structure ,Atomic de Broglie microscope ,Optics ,business.industry ,medicine ,Physics::Optics ,General Physics and Astronomy ,business ,Maxima ,Lobe - Abstract
A study is performed of the possibility of using combined two-section optical elements for shaping light fields with two pronounced maxima in the intensity distribution that rotate upon propagation and focusing. Optical elements consisting of wedges, lenses, and truncated axicons are considered. Such light fields are needed for the optical manipulation and creation of a 3D nanoscope based on a fluorescence microscope.
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- 2021
24. Cystic duct anastomosis can be a viable option for biliary reconstruction in case of multiple ducts in right lobe living-donor liver transplantation
- Author
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Ravindra Nidoni, Bhargava Ram Chikkala, Subhash Gupta, Roshan Ghimire, Shaleen Agarwal, Aarathi Vijayashanker, Rajesh Dey, and Yuktansh Pandey
- Subjects
medicine.medical_specialty ,Liver transplantation ,Complications ,business.industry ,medicine.medical_treatment ,Anastomosis ,Intensive care unit ,Lobe ,law.invention ,Surgery ,Surgical anastomosis ,medicine.anatomical_structure ,law ,Bile ducts, extrahepatic ,Postoperative results ,Medicine ,Cystic duct ,General Materials Science ,Original Article ,business ,Living donor liver transplantation ,Living donors - Abstract
Backgrounds/aims Multiple ducts in right lobe living-donor liver transplant (LDLT) pose a technical challenge in biliary reconstruction. In the absence of separate recipient hepatic ducts for duct-to-duct anastomoses and certain demerits of hepaticojejunostomy, duct to duct anastomoses with the recipient cystic duct might be a possible solution. Methods A total of 329 recipients of LDLT who underwent two or more separate biliary anastomoses at our centre between January 2014 and November 2019 were studied retrospectively. Records of demographic data, donor and graft characteristics, operative details, postoperative biochemical parameters, and biliary complications were analysed. Results Of 329 recipients, 236 patients (71.7%) underwent purely duct-to-duct (DD group) anastomoses, 38 patients (11.5%) underwent at least one anastomosis with the cystic duct (CD group), and 55 patients (16.7%) underwent at least one hepaticojejunostomy (HJ group). At one year, biliary complication rates of these three groups were 20.3%, 26.3%, and 20.0%, respectively (p = 0.68). Postoperative intensive care unit and overall hospital stay were similar among the three groups. Grades IIIa, IIIb, IV, and V Clavien-Dindo complications were identical. One-year patient survival and graft survival were also similar among the three groups. Conclusions Biliary outcomes using the cystic duct may have acceptable outcomes. Similar postoperative results as other means of biliary reconstruction could be anticipated with the cystic duct anastomoses in case of multiple ducts in the graft.
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- 2021
25. Anatomical aspects of the insula, opercula and peri-insular white matter for a transcortical approach to insular glioma resection
- Author
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Aleksandra Bala, Tomasz Dziedzic, and Andrzej Marchel
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biology ,business.industry ,General Medicine ,Anatomy ,Sulcus ,biology.organism_classification ,Brain mapping ,Lobe ,White matter ,03 medical and health sciences ,0302 clinical medicine ,medicine.anatomical_structure ,030220 oncology & carcinogenesis ,Corticospinal tract ,Fasciculus ,Medicine ,Surgery ,Neurology (clinical) ,business ,Insula ,030217 neurology & neurosurgery ,Limen insulae - Abstract
The insula is a lobe located deep in each hemisphere of the brain and is surrounded by eloquent cortical, white matter, and basal ganglia structures. The aim of this study was to provide an anatomical description of the insula and white matter tracts related to surgical treatment of gliomas through a transcortical approach. The study also discusses surgical implications in terms of intraoperative brain mapping. Five adult brains were prepared according to the Klingler technique. Cortical anatomy was evaluated with the naked eye, whereas white matter dissection was performed with the use of a microscope. The widest exposure of the insular surface was noted through the temporal operculum, mainly in zones III and IV according to the Berger-Sanai classification. By going through the pars triangularis in all cases, the anterior insular point and most of zone I were exposed. The narrowest and deepest operating field was observed by going through the parietal operculum. This method provided a suitable approach to zone II, where the corticospinal tract is not covered by the basal ganglia and is exposed just under the superior limiting sulcus. At the subcortical level, the identification of the inferior frontoocipital fasciculus at the level of the limen insulae is critical in terms of preserving the lenticulostriate arteries. Detailed knowledge of the anatomy of the insula and subcortical white matter that is exposed through each operculum is essential in preoperative planning as well as in the intraoperative decision-making process in terms of intraoperative brain mapping.
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- 2021
26. A case of left lung upper lobe bronchogenic cyst with repeated infection, treated with left lung upper division segmentectomy
- Author
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Takashi Eguchi, Kimihiro Shimizu, Kazutoshi Hamanaka, Tsutomu Koyama, Nobutaka Kobayashi, and Kentaro Miura
- Subjects
Left lung ,medicine.anatomical_structure ,business.industry ,Bronchogenic cyst ,medicine ,Anatomy ,Division (mathematics) ,business ,medicine.disease ,Lobe - Published
- 2021
27. Enhancement of Processing Capabilities of Hippocampus Lobe: A P300 Based Event Related Potential Study
- Author
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Benet, Neelesh, Krishna, Rajalakshmi, and Kumar, Vijay
- Subjects
medicine.medical_specialty ,Music therapy ,Audiology ,050105 experimental psychology ,03 medical and health sciences ,Speech and Hearing ,Cognition ,0302 clinical medicine ,Event-related potential ,P300 event related potential ,Hippocampus (mythology) ,Medicine ,0501 psychology and cognitive sciences ,Electrode placement ,Working memory ,business.industry ,05 social sciences ,Sensory Systems ,Lobe ,medicine.anatomical_structure ,Original Article ,Singing ,business ,030217 neurology & neurosurgery - Abstract
Background and Objectives: The influence of music training on different areas of the brain has been extensively researched, but the underlying neurobehavioral mechanisms remain unknown. In the present study, the effects of training for more than three years in Carnatic music (an Indian form of music) on the discrimination ability of different areas of the brain were tested using P300 analysis at three electrode placement sites.Subjects and Methods: A total of 27 individuals, including 13 singers aged 16-30 years (mean±standard deviation, 23±3.2 years) and 14 non-singers aged 16-30 years (mean age, 24±2.9 years), participated in this study. The singers had 3-5 years of formal training experience in Carnatic music. Cortical activities in areas corresponding to attention, discrimination, and memory were tested using P300 analysis, and the tests were performed using the Intelligent Hearing System.Results: The mean P300 amplitude of the singers at the Fz electrode placement site (5.64±1.81) was significantly higher than that of the non-singers (3.85±1.60; t(25)=3.3, p
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- 2021
28. Brain response to color stimuli: an EEG study with nonlinear approach
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Ranjan Sengupta, Souparno Roy, Chandrima Roy, Sayan Nag, Dipak Ghosh, Archi Banerjee, and Shankha Sanyal
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genetic structures ,medicine.diagnostic_test ,business.industry ,Color vision ,Cognitive Neuroscience ,Novelty ,Pattern recognition ,Electroencephalography ,Lobe ,Correlation ,medicine.anatomical_structure ,Normal color vision ,medicine ,Artificial intelligence ,Psychology ,business ,Research Article ,Lower degree - Abstract
Color perception is a major guiding factor in the evolutionary process of human civilization, but most of the neurological background of the same are yet unknown. This work attempts to address this area with an EEG based neuro-cognitive study on response of brain to different color stimuli. With respect to a Grey baseline seven colors of the VIBGYOR were shown to 16 participants with normal color vision and corresponding EEG signals from different lobes (Frontal, Occipital & Parietal) were recorded. In an attempt to quantify the brain response while watching these colors, the corresponding EEG signals were analysed using two of the latest state of the art non-linear techniques (MFDFA and MFDXA) of dealing complex time series. MFDFA revealed that for all the participants the spectral width, and hence the complexity of the EEG signals, reaches a maximum while viewing color Blue, followed by colors Red and Green in all the brain lobes. MFDXA, on the other hand, suggests a lower degree of inter and intra lobe correlation while watching the VIBGYOR colors compared to baseline Grey, hinting towards a post processing of visual information. We hope that along with the novelty of methodologies, the unique outcomes of this study may leave a long term impact in the domain of color perception research.
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- 2021
29. Deep Learning-Based Nuclear Lobe Count Method for Differential Count of Neutrophils
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Haruhi Ida, Keiko Miwa, Mayu Yabuta, Hiromi Masauzi, Kazunori Okada, Nobuo Masauzi, Sanae Kaga, and Iori Nakamura
- Subjects
white blood cell morphology ,Pathology ,medicine.medical_specialty ,Neutrophils ,General Biochemistry, Genetics and Molecular Biology ,Giemsa stain ,computer vision ,Sepsis ,convolutional neural networks ,medicine ,Humans ,Megaloblastic anemia ,business.industry ,Deep learning ,deep learning ,General Medicine ,medicine.disease ,blood cell automatic image analysis ,Peripheral blood ,Lobe ,medicine.anatomical_structure ,Feature (computer vision) ,Neural Networks, Computer ,Artificial intelligence ,Abnormality ,business - Abstract
Differentiating neutrophils based on the count of nuclear lobulation is useful for diagnosing various hematological disorders, including megaloblastic anemia, myelodysplastic syndrome, and sepsis. It has been reported that one-fifth of sepsis-infected patients worldwide died between 1990 and 2017. Notably, fewer nuclear-lobed and stab-formed neutrophils develop in the peripheral blood during sepsis. This abnormality can serve as an early diagnostic criterion. However, testing this feature is a complex and time-consuming task that is rife with human error. For this reason, we apply deep learning to automatically differentiate neutrophil and nuclear lobulation counts and report the world's first small-scale pilot. Blood films are prepared using venous peripheral blood taken from four healthy volunteers and are stained with May-Grünwald Giemsa stain. Six-hundred 360 × 363-pixel images of neutrophils having five different nuclear lobulations are automatically captured by Cellavision DM-96, an automatic digital microscope camera. Images are input to an original architecture with five convolutional layers built on a deep learning neural-network platform by Sony, Neural Network Console. The deep learning system distinguishes the four groups (i.e., band-formed, two-, three-, and four- and five- segmented) of neutrophils with up to 99% accuracy, suggesting that neutrophils can be automatically differentiated based on their count of segmented nuclei using deep learning.
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- 2021
30. Venous outflow reconstruction using a polytetrafluoroethylene (PTFE) graft in right lobe living donor liver transplantation: A single center study
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Kausar Makki, Arif Ali Khan, Furquan Ahmad, Vivek Vij, Q. Mohamed, Vishal Chorasiya, Ashish Singhal, and A. Srivastava
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Adult ,Male ,medicine.medical_specialty ,Adolescent ,Hepatic Veins ,030230 surgery ,Single Center ,Cold Ischemia Time ,Limited access ,Young Adult ,03 medical and health sciences ,chemistry.chemical_compound ,0302 clinical medicine ,medicine ,Humans ,Child ,Vein ,Polytetrafluoroethylene ,Vascular Patency ,Aged ,Retrospective Studies ,business.industry ,Ptfe graft ,Middle Aged ,Plastic Surgery Procedures ,Lobe ,Liver Transplantation ,Surgery ,Treatment Outcome ,medicine.anatomical_structure ,Liver ,chemistry ,030220 oncology & carcinogenesis ,Female ,Vascular Grafting ,Living donor liver transplantation ,business - Abstract
Venous outflow reconstruction is very important especially in right lobe living donor liver transplantation without middle hepatic vein. Various interposition (venous or synthetic) grafts have been recommended for reconstruction of anterior sector tributaries.We aimed to describe our surgical technique and analyze anterior sector venous reconstruction using expanded polytetrafluroethylene graft. Retrospective analysis of prospectively collected data for 760 primary right lobe living donor liver transplantations performed at our institute between December 2011 and June 2018. Reconstruction of anterior sector: expanded polytetrafluroethylene (group A, n = 705) and autologous vein (group B, n = 55).Pretransplant characteristics were comparable among both groups. Group A has significantly lower cold ischemia time (68.7 ± .3.5 minutes vs 127.8 ± 7.2 minutes; P.001) and anhepatic time (116.3 ± 5.5 minutes vs 190.81 ± 9.35 minutes; P.001) compared with group B. There was no difference in recovery pattern of liver functions, morbidity, and mortality between the 2 groups. One- and 6-month patency rates of interposition grafts were 97.6% and 84.4% (group A) and 96.4% and 78.1% (group B), respectively.In centers with limited access to homologous or autologous vascular grafts, use of expanded polytetrafluroethylene graft for anterior sector venous outflow reconstruction in right lobe living donor liver transplantation is a viable option with excellent patency and patient outcomes.
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- 2021
31. Topographic laparoscopy for buffaloes in the quadruped position
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Barbara da Conceição Guilherme, Rinaldo Batista Viana, Renato Abrantes Oliveira, Pedro Paulo Maia Teixeira, Luisa P. B. Borges, Heytor Jales Gurgel, Carla Rozilene Guimarães Silva, Gabriela Melo Alves dos Santos, Filipe Luigui Soares da Costa, Francisco Décio de Oliveira Monteiro, Rodrigo dos Santos Albuquerque, Kayan Cunha Rossy, Michel Santos Cunha, João Pedro Monteiro Barroso, and Luiz Henrique Vilela Araújo
- Subjects
Endoscope ,Buffaloes ,minimally invasive technique ,Abdominal cavity ,ruminant surgery ,Abdomen ,medicine ,Animals ,Laparoscopy ,General Veterinary ,medicine.diagnostic_test ,Full Paper ,business.industry ,Anatomy ,Greater omentum ,Lobe ,Position (obstetrics) ,Bubalus bubalis ,medicine.anatomical_structure ,Surgery ,Female ,Intercostal space ,business ,Brazil ,endosurgery - Abstract
This study aimed to describe the anatomical topography of the abdominal cavity of buffaloes in the quadruped position to establish the best endosurgical access and vantage points and identify possible limitations. Laparoscopies were performed on 10 healthy female buffaloes obtained from the Universidade Federal Rural da Amazonia to explore possible access points to the abdomen. Techniques for assessing and possibly observing certain organs and structures through the left and right flanks of 10 animals have been described. In five animals, access was created through the right side of the last intercostal space to allow more cranial access to the abdominal cavity. Despite the presence of the rumen, access through the left flank allowed the visualization of the structures of the gastrointestinal tract and the genitourinary system. With access through the right flank, however, imaging was hampered by the presence of the greater omentum and its deep and superficial walls, which prevented the progression of the endoscope. Access through the last right intercostal space allowed the visualization of the cranial structures of the abdominal cavity, such as the caudate process, right lobe of the liver, right kidney, and pancreas. Laparoscopic access through the left flank and the last intercostal space in healthy buffaloes in the quadruped position is feasible, and it is promising for the exploration, diagnosis, and treatment of various disorders in buffaloes.
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- 2021
32. A bronchopulmonary artery fistula in a horse
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Yuto Sano, Kazuya Matsuda, Hikaru Kuwajima, Hiroki Kanai, Kohei Azami, and Chiemi Baba
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Male ,Fistula ,040301 veterinary sciences ,Bronchi ,anastomosis ,Bronchial Arteries ,Anastomosis ,Pulmonary Artery ,lung ,0403 veterinary science ,03 medical and health sciences ,medicine.artery ,medicine ,Pathology ,Animals ,bronchial artery ,Horses ,Nose ,030304 developmental biology ,0303 health sciences ,Lung ,General Veterinary ,business.industry ,Horse ,04 agricultural and veterinary sciences ,Anatomy ,Elastic artery ,Note ,Lobe ,horse ,medicine.anatomical_structure ,Pulmonary artery ,Horse Diseases ,Bronchial artery ,business - Abstract
A 24-year-old, Thoroughbred gelding presented with difficulty breathing for a few days and intermittent nose bleeding before dying. At necropsy, the bronchoesophageal artery and the bronchial artery that flowed into the left anterior lobe were tortuous and dilated, and it was found that dilated tortuous branches of the bronchial artery ran over the dorsal and ventral surfaces of the left anterior lobe. Histopathologically, an anastomosis between a muscular artery and an elastic artery were demonstrated, which were identified as bronchial and pulmonary arteries, respectively. Based on the gross and histopathological findings, a bronchopulmonary artery fistula was diagnosed. To the best of our knowledge, this is the first case report of a pulmonary vascular anastomosis in a horse.
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- 2021
33. A case of lung cancer associated with partial anomalous pulmonary venous connection in non-resected lobe
- Author
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Teruhisa Kawaguchi, Tomohito Tarukawa, Motoshi Takao, and Daisuke Yamaguchi
- Subjects
medicine.medical_specialty ,medicine.anatomical_structure ,business.industry ,Medicine ,Radiology ,business ,Lung cancer ,medicine.disease ,Partial Anomalous Pulmonary Venous Connection ,Lobe - Published
- 2021
34. Behavioral phenotypes of temporal lobe epilepsy
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Mike Seidenberg, Bruce P. Hermann, Kevin Dabbs, Jana E. Jones, and Aaron F. Struck
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Concurrent validity ,Neuropsychological Tests ,behavioral disciplines and activities ,Temporal lobe ,Executive Function ,Epilepsy ,Cognition ,Neuroimaging ,medicine ,Humans ,RC346-429 ,behavior ,business.industry ,phenotypes ,Neuropsychology ,temporal lobe epilepsy ,psychopathology ,medicine.disease ,Lobe ,Phenotype ,medicine.anatomical_structure ,Epilepsy, Temporal Lobe ,Neurology ,Full‐length Original Research ,Neurology. Diseases of the nervous system ,Neurology (clinical) ,business ,Clinical psychology ,Psychopathology - Abstract
Objective To identity phenotypes of self‐reported symptoms of psychopathology and their correlates in patients with temporal lobe epilepsy (TLE). Method 96 patients with TLE and 82 controls were administered the Symptom Checklist 90‐Revised (SCL‐90‐R) to characterize emotional‐behavioral status. The nine symptom scales of the SCL‐90‐R were analyzed by unsupervised machine learning techniques to identify latent TLE groups. Identified clusters were contrasted to controls to characterize their association with sociodemographic, clinical epilepsy, neuropsychological, psychiatric, and neuroimaging factors. Results TLE patients as a group exhibited significantly higher (abnormal) scores across all SCL‐90‐R scales compared to controls. However, cluster analysis identified three latent groups: (1) unimpaired with no scale elevations compared to controls (Cluster 1, 42% of TLE patients), (2) mild‐to‐moderate symptomatology characterized by significant elevations across several SCL‐90‐R scales compared to controls (Cluster 2, 35% of TLE patients), and (3) marked symptomatology with significant elevations across all scales compared to controls and the other TLE phenotype groups (Cluster 3, 23% of TLE patients). There were significant associations between cluster membership and demographic (education), clinical epilepsy (perceived seizure severity, bitemporal lobe seizure onset), and neuropsychological status (intelligence, memory, executive function), but with minimal structural neuroimaging correlates. Concurrent validity of the behavioral phenotype grouping was demonstrated through association with psychiatric (current and lifetime‐to‐date DSM IV Axis 1 disorders and current treatment) and quality‐of‐life variables. Significance Symptoms of psychopathology in patients with TLE are characterized by a series of discrete phenotypes with accompanying sociodemographic, cognitive, and clinical correlates. Similar to cognition in TLE, machine learning approaches suggest a developing taxonomy of the comorbidities of epilepsy.
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- 2021
35. Surgical strategies for hepatocellular carcinoma located in the left lateral lobe: A propensity score‐matched and prognostic nomogram study
- Author
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Wenping Lin, Qiaoxuan Wang, Yuechao Li, Lianghe Lu, Yuhua Wen, Jingwen Zou, Jie Mei, Rong Ping Guo, Wei Wei, and Shao-Hua Li
- Subjects
0301 basic medicine ,Male ,Cancer Research ,medicine.medical_specialty ,Carcinoma, Hepatocellular ,medicine.medical_treatment ,Urology ,survival ,Disease-Free Survival ,nomogram ,surgery ,03 medical and health sciences ,0302 clinical medicine ,Clinical endpoint ,medicine ,Overall survival ,Hepatectomy ,Humans ,Radiology, Nuclear Medicine and imaging ,Propensity Score ,RC254-282 ,Proportional Hazards Models ,Retrospective Studies ,Original Research ,business.industry ,Proportional hazards model ,Liver Neoplasms ,Clinical Cancer Research ,Neoplasms. Tumors. Oncology. Including cancer and carcinogens ,hepatocellular carcinoma ,Nomogram ,Middle Aged ,medicine.disease ,Prognosis ,Lobe ,Nomograms ,cancer management ,030104 developmental biology ,medicine.anatomical_structure ,Oncology ,030220 oncology & carcinogenesis ,Hepatocellular carcinoma ,Propensity score matching ,Female ,Neoplasm Recurrence, Local ,business - Abstract
Purpose For hepatocellular carcinoma (HCC) located in the left lateral lobe, the optimal surgical procedure is still controversial. This study aimed to optimize surgical strategies and to construct a nomogram to predict the postoperative survival of patients with HCC. Methods Between 1 January 2005 and 30 September 2018, a total of 493 patients were enrolled. Propensity score matching (PSM) was performed between the left lateral lobectomy (LLL) and left hepatectomy (LH) groups (1:1). The study endpoints were overall survival (OS), recurrence‐free survival (RFS), and safety. A nomogram was generated using a multivariate Cox proportional hazards model. The discriminative ability and calibration of the nomogram were evaluated using C‐statistics and calibration plots. Results After matching, 87 pairs were included. The LH group had better 1‐, 3‐, and 5‐year OS rates than the LLL group (88%, 73%, and 69% vs. 73%, 57%, and 49%, respectively; p = 0.017). The 1‐, 3‐, and 5‐year RFS rates of the LH group were similar to those of the LLL group (64%, 49%, and 46% vs. 63%, 51%, and 42%, respectively; p = 0.652). There were no significant differences in postoperative complications. Eight factors were integrated into the nomogram and it had good discriminative ability and calibration. Conclusion Our data revealed that compared to LLL, LH may result in better OS and have similar postoperative complications for HCC. The nomogram may serve as a practical tool for the individual prognostic evaluation of patients with HCC., Left hepatectomy is a more feasible and safer surgical approach for the treatment of HCC in the left lateral lobe. The proposed nomograms can provide patient‐specific survival information for patients with HCC in the left lateral lobe after surgery.
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- 2021
36. Cadaveric study of an accessory lobe of liver and its clinical significance
- Author
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Sharadkumar Pralhad Sawant and Shaheen Rizvi
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Porta hepatis ,medicine.anatomical_structure ,Bridge (graph theory) ,business.industry ,Cadaver ,Medicine ,Clinical significance ,Anatomy ,Liver function ,business ,Cadaveric spasm ,Mesentery ,Lobe - Abstract
The complexity of liver function and its importance to life has encouraged many anatomists to study the morphological features of the liver in great detail. Despite recent technological advances like CT, MRI and USG, detailed study of the cadaveric liver can still contribute to identification of important anatomical variations. The liver can present a number of congenital anomalies. More common among them are the irregularities of the shape and the number of lobules. The less common variations include the presence of accessory lobes or accessory livers. The accessory lobes may be attached to the liver through a mesentery or a bridge of the hepatic tissue and they are usually asymptomatic. An accessory liver lobe is a very rare occurrence and when it exists, it becomes clinically important because of its rarity. Materials and Methods: A study was conducted in the Department of Anatomy of K. J. Somaiya Medical College in which 50 liver from donated embalmed cadavers were examined for the presence of accessory lobe. Only cadavers, whose clinical history excluded liver diseases, were used for the study. Results: 10% specimens showed accessory lobe. All are present on the under surface of liver. Clinical Significance: Among the less common abnormalities, are the formations of accessory lobes. Accessory lobes may carry the risk of torsion. Conclusions: Knowledge of the presence of a small accessory lobe of the liver near the porta hepatis is useful for surgeons and radiologists in diagnosing, surgical planning and avoiding iatrogenic injuries of the accessory lobe. Keywords: Liver, Accessory lobe, Donated embalmed cadavers, CT, MRI, USG, Congenital anomalies, Asymptomatic, Surgeons and radiologists.
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- 2021
37. Neurovascular multiparametric MRI defines epileptogenic and seizure propagation regions in experimental mesiotemporal lobe epilepsy
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Marine Blaquière, Fabien Boux, Vasile Stupar, Nora Collomb, Emmanuel L. Barbier, Nicola Marchi, Frédéric de Bock, Lucile Mazière, Antoine Depaulis, Florence Forbes, Emma Zub, [GIN] Grenoble Institut des Neurosciences (GIN), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Grenoble Alpes (UGA), Modèles statistiques bayésiens et des valeurs extrêmes pour données structurées et de grande dimension (STATIFY), Inria Grenoble - Rhône-Alpes, Institut National de Recherche en Informatique et en Automatique (Inria)-Institut National de Recherche en Informatique et en Automatique (Inria)-Laboratoire Jean Kuntzmann (LJK), Institut National de Recherche en Informatique et en Automatique (Inria)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ), Université Grenoble Alpes (UGA)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ), Université Grenoble Alpes (UGA), Institut de Génomique Fonctionnelle (IGF), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), ANR-19-P3IA-0003,MIAI,MIAI @ Grenoble Alpes(2019), and Université de Montpellier (UM)-Université Montpellier 1 (UM1)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Montpellier 2 - Sciences et Techniques (UM2)-Centre National de la Recherche Scientifique (CNRS)
- Subjects
Male ,blood-brain barrier permeability ,0301 basic medicine ,Kainic acid ,epileptic foci ,[SDV]Life Sciences [q-bio] ,Status epilepticus ,Hippocampus ,Machine Learning ,Mice ,03 medical and health sciences ,chemistry.chemical_compound ,Epilepsy ,0302 clinical medicine ,Image Processing, Computer-Assisted ,Animals ,cerebrovascular damage ,Medicine ,Effective diffusion coefficient ,Hippocampus (mythology) ,Multiparametric Magnetic Resonance Imaging ,Brain Mapping ,status epilepticus ,medicine.diagnostic_test ,business.industry ,Magnetic resonance imaging ,chronic seizure-spreading regions ,Neurovascular bundle ,medicine.disease ,Lobe ,Mice, Inbred C57BL ,Disease Models, Animal ,030104 developmental biology ,medicine.anatomical_structure ,Epilepsy, Temporal Lobe ,Neurology ,chemistry ,[SDV.NEU]Life Sciences [q-bio]/Neurons and Cognition [q-bio.NC] ,Neurology (clinical) ,medicine.symptom ,business ,Nuclear medicine ,030217 neurology & neurosurgery - Abstract
International audience; Objective: Improving the identification of the epileptogenic zone and associated seizure-spreading regions represents a significant challenge. Innovative brain-imaging modalities tracking neurovascular dynamics during seizures may provide new disease biomarkers.Methods: With use of a multi-parametric magnetic resonance imaging (MRI) analysis at 9.4 Tesla, we examined, elaborated, and combined multiple cellular and cerebrovascular MRI read-outs as imaging biomarkers of the epileptogenic and seizure-propagating regions. Analyses were performed in an experimental model of mesial temporal lobe epilepsy (MTLE) generated by unilateral intra-hippocampal injection of kainic acid (KA).Results: In the ipsilateral epileptogenic hippocampi, tissue T1 and blood-brain barrier (BBB) permeability to gadolinium were increased 48-72 hours post-KA, as compared to sham and contralateral hippocampi. BBB permeability endured during spontaneous focal seizures (4-6 weeks), along with a significant increase of apparent diffusion coefficient (ADC) and blood volume fraction (BVf). Simultaneously, ADC and BVf were augmented in the contralateral hippocampus, a region characterized by electroencephalographic seizure spreading, discrete histological neurovascular cell modifications, and no tissue sclerosis. We next asked whether combining all the acquired MRI parameters could deliver criteria to classify the epileptogenic from the seizure-spreading and sham hippocampi in these experimental conditions and over time. To differentiate sham from epileptogenic areas, the automatic multi-parametric classification provided a maximum accuracy of 97.5% (32 regions) 48-72 hours post-KA and of 100% (60 regions) at spontaneous seizures stage. To differentiate sham, epileptogenic, and seizure-spreading areas, the accuracies of the automatic classification were 93.1% (42 regions) 48-72 hours post-KA and 95% (80 regions) at spontaneous seizure stage.Significance: Combining multi-parametric MRI acquisition and machine-learning analyses delivers specific imaging identifiers to segregate the epileptogenic from the contralateral seizure-spreading hippocampi in experimental MTLE. The potential clinical value of our findings is critically discussed.
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- 2021
38. A case of diffuse hepatic hemangiomatosis coexistent with giant hemangioma: case report and literature review
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M. Isabel González-Nieto and Luz Adriana Escobar Hoyos
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medicine.medical_specialty ,R895-920 ,Context (language use) ,Computed tomography ,Case Report ,030218 nuclear medicine & medical imaging ,Lesion ,Hemangioma ,Diffuse hepatic hemangiomatosis ,03 medical and health sciences ,Medical physics. Medical radiology. Nuclear medicine ,Giant hemangioma ,0302 clinical medicine ,Magnetic resonance imaging ,Medicine ,Radiology, Nuclear Medicine and imaging ,medicine.diagnostic_test ,business.industry ,Giant Hemangioma ,medicine.disease ,Lobe ,medicine.anatomical_structure ,Abdomen ,Radiology ,medicine.symptom ,business ,030217 neurology & neurosurgery - Abstract
We report a case of hepatic hemangiomatosis coexistent with a giant hepatic hemangioma diagnosed in the context of the study for SARS-CoV-2 infection. Computed tomography showed irregular contours of the left hepatic lobe with a lesion that compromised the whole lobe, with peripheral uptake and a centripetal tendency in the late phase, compatible with bulky cavernous hemangioma, as well as another lesion with the same characteristics in segment VI. Magnetic resonance imaging of the abdomen showed multiple hepatic hemangiomas observed in both lobes involving all segments, some of them smaller than 1 cm, which were hyperintense in the T2-weighted sequences and showed progressive contrast enhancement. This case illustrates the incidental diagnosis of this condition during the study for another pathology, the radiological features that are important to differentiate from other tumoral findings, and the possible management strategies to follow.
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- 2021
39. Safe use of right lobe living donor livers with moderate steatosis in adult‐to‐adult living donor liver transplantation: a retrospective study
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Ki-Hun Kim, Dong Hwan Jung, Timothy L. Pruett, Chul Soo Ahn, Sung-Gyu Lee, Varvara A. Kirchner, Deok Bog Moon, Eun Young Tak, Kyung Won Kim, Ju Hyun Shim, Gil Chun Park, Young In Yoon, Shin Hwang, Gi-Won Song, and Tae Yong Ha
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Adult ,medicine.medical_specialty ,030230 surgery ,Single Center ,Gastroenterology ,03 medical and health sciences ,0302 clinical medicine ,Internal medicine ,Biopsy ,Living Donors ,Hepatectomy ,Humans ,Medicine ,Retrospective Studies ,Transplantation ,medicine.diagnostic_test ,business.industry ,Mortality rate ,Retrospective cohort study ,medicine.disease ,Liver regeneration ,Lobe ,Liver Transplantation ,Fatty Liver ,medicine.anatomical_structure ,Liver ,030211 gastroenterology & hepatology ,Liver function ,Steatosis ,business - Abstract
Hepatic steatosis (HS) beyond a certain degree can jeopardize living donor (LD) safety, particularly in right lobe (RL) donors, making it a major obstacle for donor pool expansion in adult-to-adult living donor liver transplantation (ALDLT). From July 2004 to June 2016, 58 LDs donated their RLs despite having moderate HS (30%-50% steatosis) determined by intraoperative biopsy at a single center. We performed greedy matching to compare the outcomes of the donors and recipients of this group with those of LDs with no HS. The mean left lobe (LL) HS value in the 58 cases was 20.9 ± 12.4%, which was significantly lower than the mean RL HS value (38.8 ± 6.7%, P
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- 2021
40. Adenoid cystic carcinoma of the palpebral lobe of the lacrimal gland – case report and literature review
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Ana Filipa Duarte, Nuno Caçador, Ana M Afonso, Ana Magriço Boavida, Miguel Vilares, Diogo Alpuim Costa, and Martin H. Devoto
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Adult ,Pathology ,medicine.medical_specialty ,Adenoid cystic carcinoma ,Lacrimal gland ,Neoplasias da Orbita ,03 medical and health sciences ,0302 clinical medicine ,Humans ,Neoplasias dos Olhos ,Medicine ,030223 otorhinolaryngology ,Lacrimal Apparatus Diseases ,business.industry ,Eye Neoplasms ,Lacrimal Apparatus ,Eyelids ,medicine.disease ,Carcinoma, Adenoid Cystic ,Lobe ,stomatognathic diseases ,Ophthalmology ,medicine.anatomical_structure ,Palpebral fissure ,030221 ophthalmology & optometry ,Orbital Neoplasms ,Female ,Tomography, X-Ray Computed ,business ,Carcinoma Adenoide Quístico - Abstract
Epithelial tumors of the lacrimal gland are rare and usually develop in the orbital lobe. We report the exceedingly rare occurrence of a primary adenoid cystic carcinoma in the palpebral lobe of the lacrimal gland. A 26-year-old female was referred for evaluation of a gradually enlarging mass in the lateral upper eyelid, previously diagnosed as a chalazion. Computed tomography revealed a heterogeneous round lesion anterior to the orbital rim. Excisional biopsy was compatible with an adenoid cystic carcinoma. After excluding distant metastasis, and as the patient refused adjuvant radiotherapy, a second surgical procedure, with wide local excision, was indicated. Follow-up showed no recurrence. This case highlights the importance of performing a thorough clinical examination when diagnosing any lateral upper eyelid mass. A high index of suspicion for malignant tumors of the lacrimal gland should always be maintained, and a complete excision with histological analysis should be preferred whenever possible. info:eu-repo/semantics/publishedVersion
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- 2021
41. The two huge pulmonary hytadic cyst in the one lobe of lung: A case report
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Gökhan Öztürk
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General and Internal Medicine ,Pathology ,medicine.medical_specialty ,Lung ,business.industry ,medicine.disease ,Lobe ,The hydatid cysts,thoracotomy,cystotomy,quilting ,medicine.anatomical_structure ,parasitic diseases ,General Earth and Planetary Sciences ,Medicine ,Cyst ,business ,Genel ve Dahili Tıp ,General Environmental Science - Abstract
The hydatid cysts disease is a parasitic cystic infection of the liver, lungs, and other organs, caused by Echinococcus granulosus. It is mostly seen in the sheep and cattle farms, which have poor health conditions. It is endemic in the eastern and southwestern regions of Türkiye. The big cysts that are seen in the lungs are called a huge pulmonary cyst. And it is a particular clinic situation. The symptoms of the disease are cough, chest pain, dyspnoea, hemoptysis, or allergic reactions. The hemoptysis could be seen when these cysts rupture. The use of anthelmintic drugs to treat the pulmonary hydatid cysts could cause cyst rupture. The surgery must be the first choice of treatment. In our case, we discussed the two huge pulmonary hydatid cysts in the upper left lobe of the lung which were treated with thoracotomy.
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- 2021
42. Characterizing Static and Dynamic Fractional Amplitude of Low-Frequency Fluctuation and its Prediction of Clinical Dysfunction in Patients with Diffuse Axonal Injury
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Hongmei Kuang, Honghan Gong, Yinhua Wang, Tao Gong, Jian Li, Jie Zhan, Fuqing Zhou, and Wenhua Xu
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medicine.medical_specialty ,Connectomics ,Diffuse Axonal Injury ,computer.software_genre ,030218 nuclear medicine & medical imaging ,03 medical and health sciences ,0302 clinical medicine ,Artificial Intelligence ,Voxel ,Internal medicine ,medicine ,Humans ,Radiology, Nuclear Medicine and imaging ,Brain Mapping ,medicine.diagnostic_test ,business.industry ,Diffuse axonal injury ,Glasgow Coma Scale ,Brain ,Magnetic resonance imaging ,Medial frontal gyrus ,medicine.disease ,Magnetic Resonance Imaging ,Lobe ,Intensity (physics) ,medicine.anatomical_structure ,030220 oncology & carcinogenesis ,Cardiology ,business ,computer - Abstract
Rationale and Objectives Recently, advanced magnetic resonance imaging has been widely adopted to investigate altered structure and functional activities in patients with diffuse axonal injury (DAI), this patient presumed to be caused by shearing forces and results in significant neurological effects. However, little is known regarding cerebral temporal dynamics and its predictive ability in the clinical dysfunction of DAI. Materials and Methods In this study, static and dynamic fractional amplitude of low-frequency fluctuation (fALFF), an improved approach to detect the intensity of intrinsic neural activities, and their temporal variability were applied to examine the alteration between DAI patients (n = 24) and healthy controls (n = 26) at the voxel level. Then, the altered functional index was used to explore the clinical relationship and predict dysfunction in DAI patients. Results We discovered that, compared to healthy controls, DAI patients showed commonly altered regions of static fALFF, and its variability was mainly located in the left cerebellum posterior lobe. Furthermore, decreased static fALFF values over the left cerebellum posterior lobe and bilateral medial frontal gyrus showed significant correlations with disease duration and Mini-Mental State Examination scores. More important, the increased temporal variability of dynamic fALFF in the left caudate could predict the severity of the Glasgow Coma Scale score in DAI patients. Conclusion Overall, these results suggested selective abnormalities in intrinsic neural activities with reduced intensity and increased variability, and this novel predictive marker may be developed as a useful indicator for future connectomics or artificial intelligence analyses.
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- 2021
43. Abnormal intrinsic functional network hubs in diabetic retinopathy patients
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Yan Tong, Bao-Jun Xie, Yin Shen, Xin Huang, and Chen-Xing Qi
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Male ,0301 basic medicine ,Cerebellum ,medicine.medical_specialty ,Precuneus ,Functional networks ,03 medical and health sciences ,0302 clinical medicine ,Parietal Lobe ,Pons ,Ophthalmology ,Neural Pathways ,medicine ,Humans ,Cingulum (brain) ,Visual Pathways ,Diabetic Retinopathy ,business.industry ,Functional Neuroimaging ,General Neuroscience ,Functional connectivity ,Brain ,Diabetic retinopathy ,Middle Aged ,medicine.disease ,Magnetic Resonance Imaging ,Temporal Lobe ,Lobe ,030104 developmental biology ,medicine.anatomical_structure ,nervous system ,Case-Control Studies ,Female ,Occipital Lobe ,Caudate Nucleus ,business ,030217 neurology & neurosurgery - Abstract
Background However, whether the whole-brain functional network hub changes occur in diabetic retinopathy patients remains unknown. Purpose The purpose of the study was to investigate the function network centrality and connectivity changes in diabetic retinopathy patients using the voxel-wise degree centrality method. Materials and methods Thirty-four diabetic retinopathy patients (18 male and 16 female) and 38 healthy controls (18 male and 20 female) closely matched in age, sex, and education were enrolled in the study. Graph theory-based network analysis was performed to investigate the degree centrality between two groups. Results Compared with healthy controls, diabetic retinopathy patients had significantly higher degree centrality values in the pons and bilateral caudate and had significantly lower degree centrality values in the left lingual and right lingual, and right angular/middle occipital gyrus (MOG). Moreover, diabetic retinopathy patients exhibited increased functional connectivity between the bilateral lingual and right cerebellum lobe and right fusiform/bilateral caudate and increased functional connectivity between the right angular/MOG and bilateral anterior cingulum and right cuneus/bilateral precuneus and increased functional connectivity between the bilateral caudate and right lingual and right superior occipital gyrus. In contrast, diabetic retinopathy patients showed decreased functional connectivity between bilateral lingual and left lingual and right lingual and left superior occipital gyrus and decreased functional connectivity between the angular/MOG and right inferior occipital gyrus/right fusiform and left MOG/inferior occipital gyrus and decreased functional connectivity between the bilateral caudate and bilateral cerebellum crus1. Conclusion Our results highlight that reorganization of the hierarchy of the cortical connectivity network related to visual network.
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- 2021
44. Azygos lobe as a rare incidental finding
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Samir Mohamed Fahyim
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Azygos lobe ,Lung ,medicine.diagnostic_test ,business.industry ,Computed tomography ,General Medicine ,Anatomy ,Lobe ,medicine.anatomical_structure ,Human anatomy ,medicine ,Right upper lobe ,Azygos vein ,business ,Pleural fissure - Abstract
As regard human anatomy the azygos lobe is considered a congenital anomaly of the upper lobe of the right lung. In embryolog, the pleural septum of the upper lobe the lateral course of azygos vein arises in abnormal manner. It considered not a true lobe as it has no vessels, bronchi or even accessory, pulmonary lobe, but considered separated part of the upper lobe. It is usually discovered accidentally on chest x-ray or computed tomography and is not associated with any morbidity but can cause technical problems in thoraco-scopic maneuvers. Conclusion and Clinical Message Azygos vein laterally displaced into apical segment of right upper lobe leading to deep pleural fissure during embryological development resulting in formation of azygos lobe. No problem or disease result from this anatomical variant but must be considered during thoracic surgeries as also it is not even accessory lobe as it does not has normal structures of true lobe. Azygos lobe is found in 1% of anatomic specimens .
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- 2021
45. Solitary Intrathyroid Metastasis Occurring 23 Years after Resection of Renal Cell Carcinoma
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X. Vandemergel
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medicine.medical_specialty ,business.industry ,Endocrinology, Diabetes and Metabolism ,medicine.medical_treatment ,Ultrasound ,Thyroidectomy ,Case Report ,Nodule (medicine) ,RC648-665 ,medicine.disease ,Diseases of the endocrine glands. Clinical endocrinology ,Lobe ,Metastasis ,Resection ,medicine.anatomical_structure ,Renal cell carcinoma ,medicine ,Radiology ,medicine.symptom ,business ,Histological examination - Abstract
A case of solitary intrathyroid metastasis is described in a 60-year-old male patient. He had a history of renal cell carcinoma classified as T1b resected 23 years earlier. A mass was palpable in the right thyroid lobe. Ultrasound showed a hypoechoic polylobular nodule with intense vascularisation in the right lobe. Fine needle aspiration cytology was normal, but thyroidectomy was performed due to mass enlargement, the ultrasound pattern, and the oncological history. Histological examination revealed the presence of an intrathyroid metastasis of renal cell carcinoma. The bone scan and thoracoabdominal CT scan were normal. Postoperative care was uneventful.
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- 2021
46. Giant Parasagittal Meningioma with Complete Visual Loss in Young Female: A Case Report
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Muhammad Ari Irsyad, Patrice Lwy Sinaga, and Ridha Dharmajaya
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medicine.medical_specialty ,Parasagittal Meningioma ,business.industry ,Pharmaceutical Science ,Lobe ,Blunt ,medicine.anatomical_structure ,Complementary and alternative medicine ,Occlusion ,Total removal ,Medicine ,Pharmacology (medical) ,Radiology ,business ,Young female ,Venous return curve ,Superior sagittal sinus - Abstract
Parasagittal meningioma is a benign extra-axial tumor from the arachnoid cap cell that fills the parasagittal angle. This case report presents a case of a 21-years old young female with a history of complete visual loss, left side paresthesia, and progressive blunt headache. Brain MRI and MRV revealed a giant enhancing tumor measuring 9.2 cm x 8.41 cm x 7.5 cm on the right parietooccipital lobe with obstruction of the posterior third of the superior sagittal sinus. Gross total removal was achieved. The pathology reports confirmed a WHO grade I meningioma. The paresthesia and headache were improved, but the loss of visions did not change. Giant parasagittal meningioma may invade the superior sagittal sinus leading to intracranial hypertension. The surgical strategy should target the survival and postoperative quality of life. Occlusion of posterior third superior sagittal sinus affects deficiency venous return resulting in visual loss.
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- 2021
47. Effect of b values and size of region of interest on apparent diffusion coefficient measurement and its reproducibility in liver diffusion-weighted MRI
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Huang Shengfu, Lu Shaofan, Xie Liling, Huang Yucun, and Cao Zhi
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Reproducibility ,Polymers and Plastics ,business.industry ,Left lobe ,Statistical difference ,Lobe ,medicine.anatomical_structure ,Region of interest ,medicine ,Effective diffusion coefficient ,Nuclear medicine ,business ,General Environmental Science ,Diffusion MRI ,Mathematics - Abstract
To investigate the effect of b value and size of region of interest (ROI) on apparent diffusion coefficient (ADC) measurement and its reproducibility in liver diffusion-weighted imaging (DWI). Thirty-six volunteers underwent liver DWI twice with b values of 0, 100, 500, and 800 s/mm2. ADCs were measured with ROI of 50 mm2 on ADC maps generated with different b values of (0, 100), (0, 500), (0, 800), (0, 100, 500), (0, 100, 800), (0, 500, 800), and (0, 100, 500, 800) s/mm2. ADCs from b values of (0, 800) s/mm2 were measured with 4 ROI sizes (50, 100, 200 and 300 mm2). ANOVA analysis was used to compare differences of ADCs among different ROI sizes and different combined b values. Bland–Altman method was used to assess reproducibility of ADC measurement. ADCs with larger ROI size were slightly higher than those with smaller one, while no statistical difference was found (P > 0.05). And reproducibility of ADC measurement with different ROI sizes was comparable (LOA 7.0–8.2% for right lobe, 14.15–17.4% for left lobe). ADCs statistically decreased with increased maximum b values (P
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- 2021
48. Current status of left lobe adult to adult living donor liver transplantation
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John P. Roberts and Hillary J. Braun
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Transplantation ,Small for size syndrome ,Graft dysfunction ,Deceased donor ,medicine.medical_specialty ,business.industry ,Left lobe ,Economic shortage ,Patient survival ,Lobe ,Surgery ,medicine.anatomical_structure ,medicine ,Immunology and Allergy ,Living donor liver transplantation ,business - Abstract
PURPOSE OF REVIEW This review describes the history and current state of left lobe living donor liver transplantation (LDLT). The transplant community continues to face an organ shortage on a global scale, and the expansion of LDLT is attractive because it allows us to provide life-saving liver transplants to individuals without drawing from, or depending on, the limited deceased donor pool. Donor safety is paramount in LDLT, and for this reason, left lobe LDLT is particularly attractive because the donor is left with a larger remnant. RECENT FINDINGS This article reviews the donor and recipient evaluations for left lobe LDLT, discusses small for size syndrome and the importance of portal inflow modification, and reviews recipient outcomes in right lobe versus left lobe LDLT. SUMMARY Left lobe LDLT was the first adult-to-adult LDLT ever to be performed in Japan in 1993. Since that time, the use of both right and left lobe LDLT has expanded immensely. Recent work in left lobe LDLT has emphasized the need for inflow modification to reduce portal hyperperfusion and early graft dysfunction following transplant. Accumulating evidence suggests, however, that even though early graft dysfunction following LDLT may prolong hospitalization, it does not predict graft or patient survival.
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- 2021
49. Analysis of clinical features of large-cell neuroendocrine carcinoma patients guided by chest CT image under deep learning
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Zhongtao Zhang, Chunfeng Zheng, Haiyun Zhou, Xiaoting Wang, and Juan Li
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medicine.medical_specialty ,business.industry ,Computer science ,Deep learning ,Image segmentation ,Chest pain ,Lobe ,Theoretical Computer Science ,Lesion ,medicine.anatomical_structure ,Hardware and Architecture ,medicine ,Sputum ,Segmentation ,Artificial intelligence ,Radiology ,medicine.symptom ,business ,Pathological ,Software ,Information Systems - Abstract
This work aimed to explore chest computed tomography (CT) image segmentation of patients with large-cell neuroendocrine carcinoma (LCNEC) based on deep learning, as well as the clinical manifestations and imaging and pathological features of LCNEC patients. Clinical data of 40 patients with LCNEC confirmed by pathological examination in the X Hospital from December 2015 to December 2017 were retrospectively selected. CT image data were segmented by TJ-1 model modified full convolutional neural network (FCNN) model. The accuracy and training time of TJ-1 FCNN model and classic deep learning segmentation network model AlexNet model were compared in terms of image segmentation. According to the image segmentation results by TJ-1 FCNN model, chest CT images of LCNEC patients, were reviewed, and the clinical manifestations, as well as the imaging and pathological features of the patients were reviewed, sorted, and summarized. The results showed that the image segmentation accuracy of TJ-1 network model (99.38%) was higher than that of AlexNet model. The iteration training time of TJ-1 network model for 30 times was 45 min, lower than that of AlexNet model (82 min). LCNEC was more likely to be found in elderly male with a long history of smoking. The clinical symptoms were cough, sputum, sputum blood, and chest pain with no significant specificity. CT imaging showed that peripheral mass was the most common manifestation (67.5%), both lungs were visible, the upper lobe was more likely with lesion (60%), the edge of the lesion was clear or smooth (57.5%), which was lobulated (70%). Under the light microscope, tumor cells were characterized by large volume, low nucleocytoplasmic ratio, high mitosis, and large area necrosis. The positive rates of immunohistochemical neuroendocrine markers were CD56 (62.5%), CgA (50%), and Syn (85%), among which Syn was with the highest positive rate. To sum up, LCNEC lacked clinical and radiological specificity manifestations, while chest CT image segmentation based on TJ-1 FCNN model can quickly mark the location of the lesion, providing technical support for the diagnosis and evaluation of LCNEC clinically.
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- 2021
50. Healthy individuals vs patients with bipolar or unipolar depression in gray matter volume
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Hui Li, Zhi-Wei Shen, Renhua Wu, Chang Xu, Yue-Jun Huang, and Yin-Nan Zhang
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Bipolar disorder ,Functional magnetic resonance imaging ,Observational Study ,03 medical and health sciences ,symbols.namesake ,0302 clinical medicine ,Gyrus ,Medicine ,Gray matter ,Fisher's exact test ,First episode ,Foramen magnum ,medicine.diagnostic_test ,business.industry ,Unipolar depression ,General Medicine ,Anatomy ,Voxel-based morphometry ,medicine.disease ,Lobe ,medicine.anatomical_structure ,Classification techniques ,nervous system ,030220 oncology & carcinogenesis ,symbols ,030211 gastroenterology & hepatology ,business - Abstract
Background Previous studies using voxel-based morphometry (VBM) revealed changes in gray matter volume (GMV) of patients with depression, but the differences between patients with bipolar disorder (BD) and unipolar depression (UD) are less known. Aim To analyze the whole-brain GMV data of patients with untreated UD and BD compared with healthy controls. Methods Fourteen patients with BD and 20 with UD were recruited from the Mental Health Center of Shantou University between August 2014 and July 2015, and 20 non-depressive controls were recruited. After routine three-plane positioning, axial T2WI scanning was performed. The connecting line between the anterior and posterior commissures was used as the scanning baseline. The scanning range extended from the cranial apex to the foramen magnum. Categorical data are presented as frequencies and were analyzed using the Fisher exact test. Results There were no significant intergroup differences in gender, age, or years of education. Disease course, age at the first episode, and Hamilton depression rating scale scores were similar between patients with UD and those with BD. Compared with the non-depressive controls, patients with BD showed smaller GMVs in the right inferior temporal gyrus, left middle temporal gyrus, right middle occipital gyrus, and right superior parietal gyrus and larger GMVs in the midbrain, left superior frontal gyrus, and right cerebellum. In contrast, UD patients showed smaller GMVs than the controls in the right fusiform gyrus, left inferior occipital gyrus, left paracentral lobule, right superior and inferior temporal gyri, and the right posterior lobe of the cerebellum, and larger GMVs than the controls in the left posterior central gyrus and left middle frontal gyrus. There was no difference in GMV between patients with BD and UD. Conclusion Using VBM, the present study revealed that patients with UD and BD have different patterns of changes in GMV when compared with healthy controls.
- Published
- 2021
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