scholarly journals Serendipitous Discovery of a Benign Obturator Nerve Schwannoma

2021 ◽  
Author(s):  
Suhani Sumalatha ◽  
Nikhila Appala ◽  
Ashwija Shetty ◽  
Deepak Nayak ◽  
Sushma Prabhath ◽  
...  
Keyword(s):  
Peripheral Nerves ◽  
Obturator Nerve ◽  
Sacral Promontory ◽  
Medical College ◽  
Nerve Sheath ◽  
Pelvic Masses ◽  
Male Cadaver ◽  
Benign Tumours ◽  
Myxoid Degeneration ◽  
Histopathological Investigation

Schwannomas are typically benign tumours of the peripheral nerves. However, they seldom arise from the obturator nerve. Here we report a case of an uncommon swelling (2.5 × 3.5cm) in a 65-year-old male cadaver which was found during the routine dissection for first MBBS students in the department of Anatomy, Kasturba Medical College, Manipal, India in the month ofDecember 2019. It was seen originating from the left obturator nerve in the pelvis at the level of the sacral promontory. Histopathological investigation revealed a schwannoma. The hypocellular tumor was arranged in a sweeping fascicle pattern with patches of myxoid degeneration. Obturator schwannomas, though rarely seen, can exist in the cadaver, as seen in the present case. Hence, it should be considered as a differential diagnosis for clinical cases of pelvic masses and eliminated only after thorough radiological examination. Knowledge about the existence of such schwannomas is, therefore, a must. Keywords: Schwannoma, Obturator nerves, neurilemmoma, nerve sheath neoplasms.

scholarly journals Case Report of Schwannomas: Benign Tumour of the Peripheral Nerve Sheath

EMJ Neurology ◽  
2020 ◽  
pp. 103-107
Author(s):  
Ansilata Marlyn Ansilata Marlyn ◽  
Faisal Ameer ◽  
Hillol Kanti Pal
Keyword(s):  
Case Report ◽  
Postoperative Complications ◽  
Peripheral Nerve ◽  
Peripheral Nerves ◽  
Sural Nerve ◽  
Tibial Nerve ◽  
The Other ◽  
Surgical Microscope ◽  
Nerve Sheath ◽  
Benign Tumours

Schwannomas, also known as neurilemmomas, are benign peripheral nerve sheath tumours arising from the Schwann cells surrounding the nerve. Incidence of peripheral nerve sheath benign tumours occurring in the lower extremities is rare (1–10%). The authors present two cases with solitary schwannomas from the peripheral nerves. In one case, the schwannoma arose from the sural nerve and in the other, from the tibial nerve. They were successfully surgically removed with the aid of a surgical microscope, with no intraoperative or postoperative complications.

scholarly journals A case of retroperitoneal schwannoma

2020 ◽  
Vol 7 (6) ◽  
pp. 2047
Author(s):  
Jayesh V. Parikh ◽  
Parth R. Dalal ◽  
Imran D. Desai ◽  
Aquibjaved M. Patel
Keyword(s):  
Peripheral Nerves ◽  
Surgical Excision ◽  
Carney Complex ◽  
The Body ◽  
Pressure Effects ◽  
Uneventful Recovery ◽  
Nerve Sheath ◽  
Rare Tumours ◽  
Retroperitoneal Schwannoma ◽  
Benign Tumours

Schwannoma are benign tumours of nerve sheath. They are also called as neurilemmoma. They are rare tumours arising from peripheral nerves, though they can occur anywhere on the body. Schwannoma can arise from any peripheral nerves or spinal nerves. Since they arise from nerve sheath forming schwannoma cells, they are never seen in brain or spinal cord. Schwannoma are often associated with neurofibromatosis-2, schwannomatosis and Carney complex where it is inherited in an autosomal dominant manner. They care often asymptomatic and diagnosed incidentally. Symptoms of schwannoma are related to pressure effects over the surrounding structures, such as limb pain, tingling and numbness, deafness and facial weakness as in vestibular schwannoma. However, most schwannoma are detected incidentally as in the case reported below. A 48 years female was diagnosed with an asymptomatic left para renal lump, which was later confirmed to be a retroperitoneal schwannoma. The patient had no complaints with respect to the lump. The patient underwent a successful surgical excision and had an uneventful recovery.

scholarly journals Evaluation of female pelvic mass - correlation of clinical and histopathological findings in female patients attending at Birat Medical College and Teaching Hospital, Morang, Nepal

2020 ◽  
Vol 4 (3) ◽  
pp. 845-849
Author(s):  
Seema Kumari Mishra ◽  
Roshan Pradhan ◽  
Hanoon P Pokharel
Keyword(s):  
Clinical Diagnosis ◽  
Teaching Hospital ◽  
Pelvic Mass ◽  
Exploratory Laparotomy ◽  
Cross Sectional Study ◽  
Histopathological Diagnosis ◽  
Female Pelvis ◽  
Cross Sectional ◽  
Medical College ◽  
Pelvic Masses

Introduction: The female pelvis is a quite complex anatomical region consisting of uro-genital system as its main part and other structures like blood vessels, gastrointestinal tracts, lymphatics, nerves and a part of musculoskeletal system. Thus, the differential diagnosis of pelvic masses may be of gynecological or non gynecological origin. Gynecological pelvic masses are uterine, ovarian or adnexal masses which may be benign or malignant. Objective: The objective of this study was to evaluate the type of various gynecological pelvic masses and to correlate the preoperative diagnosis with histopathological diagnosis. Methodology: This was a hospital based cross sectional study conducted on 107 patients from September 2018 to September 2019 at Birat Medical College and Teaching Hospital (BMCTH) with presenting complian of lump in the abdomen. These patients underwent clinical examination, routine and specific investigations along with ultrasonographic evaluation and tumour markers to reach a preoperative clinical diagnosis. Patients were admitted and preanesthetic consultation was done. Patients were taken for therapeutic or diagnostic laparoscopy or exploratory laparotomy and diagnosis were confirmed with histopathological diagnosis. Results: Total 107 patients were enrolled in the study with age ranging from 21 to ≥70 years and among them majority (42.1%) were in the age group of 41-50 years. The most common presenting complain of patients were lower abdominopelvic pain (58.87%). The most common clinical diagnosis was leiomyoma in 39.25% patients followed by adenomyosis in 24.29% patients. The most common histopathological diagnosis was fibroid uterus seen in 42.05% patients. There were 2 (1.86%) patients of ovarian malignancies and 1 (0.93%) patient of uterine malignancy.

scholarly journals Neurogenic Tumors of the Mediastinum: A Report of 60 Cases

2000 ◽  
Vol 7 (3) ◽  
pp. 261-265 ◽  
Author(s):  
Salih Topçu ◽  
Aysin Alper ◽  
Erkmen Gülhan ◽  
Osman Koçyigit ◽  
Irfan Tastepe ◽  
...  
Keyword(s):  
Complete Resection ◽  
Infants And Children ◽  
Malignant Tumours ◽  
Autonomic Ganglion ◽  
Term Survival ◽  
Nerve Sheath ◽  
Chest Disease ◽  
Benign Tumours

OBJECTIVES:To analyze retrospectively 60 patients (13 infants and children, 47 adults - 21 men and 39 women) with mediastinal neurogenic tumours admitted to Atatürk Centre for Chest Disease and Chest Surgery, Ankara, Turkey between 1988 and 1999. This comprised 21.2% of 283 patients who had surgical operations for all mediastinal masses during the same period.PATIENTS AND METHODS:The patients ranged from four to 67 years of age. Thirteen patients were younger than 15 years and 47 were 15 years of age or older. Medical records were reviewed for demographic data, clinical presentation, diagnostic investigations, operative procedures, and tumour location and invasion. Postoperative morbidity and mortality were noted as well as long term follow-up. The clinical investigations included chest x-ray and computed tomography of the thorax in all patients, and spinal magnetic resonance imaging and bronchoscopical examination in some. Clinical variables were compared.RESULTS:The tumours had the following characteristics: 42 (70%) were nerve sheath tumours; 15 (25%) were autonomic ganglion tumours; two (3.6%) were paragangliomas; and one (1.4%) was a malignant peripheral neuroectodermal tumour (Askin's tumour). Nerve cell tumours comprised the majority of tumours in infants and children (nine of 13, 69%), whereas the nerve sheath tumours were most frequent in adults (39 of 47, 83%). There were 48 benign and 12 (20%) malignant tumours when all age groups were considered; the malignancy rate was 61.5% (eight of 13) in children and  8.5% (four of 47, P<0.05) in adults. All patients were operated via a posterolateral thoracotomy. Surgical resection of the tumour was complete in 56 of 60 patients (93.3%). Resection of malignant tumours was grossly incomplete in four cases (four of 12, 33.3%). All benign tumours were totally excised. There were two major complications (respiratory failure and pulmonary emboli) and 14 minor complications in the perioperative period. The mean follow-up period was five years and seven months. Tumours recurred in 5.3% (three of 56) of patients who had a complete resection initially. There were no late deaths related to benign tumours.CONCLUSIONS:Complete resection of tumours can be performed safely by a thoracotomy approach and is important for achieving satisfactory long term survival in most mediastinal neurogenic tumours.

scholarly journals Cadaveric Study of Anatomical Variations in the Musculocutaneous Nerve and in the Median Nerve

2019 ◽  
Vol 36 (02) ◽  
pp. 122-125
Author(s):  
Abhilasha Priya ◽  
Chandni Gupta ◽  
Antony Sylvan D'souza
Keyword(s):  
Brachial Plexus ◽  
Median Nerve ◽  
Peripheral Nerves ◽  
Anatomical Variations ◽  
Musculocutaneous Nerve ◽  
Branching Pattern ◽  
Kasturba Medical College ◽  
Upper Limbs ◽  
Medical College ◽  
Lateral Cord

Introduction The musculocutaneous nerve and the median nerve are branches from the lateral cord of the brachial plexus with a root value of C5, C6, and C7. The medial root of the median nerve is a branch of the medial cord. The present study aims at observing any variations in these peripheral nerves, so that this knowledge can be utilized by surgeons, anesthesiologists, and orthopedicians during surgical procedures and nerve block. Materials and Methods The present study was carried on 30 adult embalmed cadavers (60 upper limbs) in the department of anatomy of the Kasturba Medical College , Manipal, India. The infraclavicular part of the brachial plexus was dissected, and any anatomical variations in the formation and in the branching pattern of the musculocutaneous nerve and of the median nerve were noted and photographs were taken. Results The median nerve was noted to be formed from 3 roots in 8 out of 60 dissected upper limbs (13.33%). The musculocutaneous nerve was absent in 5% of the dissected limbs, and communications between these 2 nerves were noted in 13.33% of the dissected limbs. Conclusions Noted variations of the nerves may be of help to surgeons operating in the axillas and in the arms.

Pelvic Schwannoma: Robotic Laparoscopic Resection

2012 ◽  
Vol 72 (1) ◽  
pp. ons2-ons5 ◽  
Author(s):  
Constance Deboudt ◽  
Jean-Jacques Labat ◽  
Thibault Riant ◽  
Olivier Bouchot ◽  
Roger Robert ◽  
...  
Keyword(s):  
Peripheral Nerves ◽  
Benign Tumor ◽  
Laparoscopic Resection ◽  
Resonance Imaging ◽  
Pelvic Nerve ◽  
Neurological Sequelae ◽  
Nerve Sheath ◽  
Rare Benign Tumor ◽  
The Right

Abstract Background: Schwannoma is a rare benign tumor of peripheral nerves arising from Schwann cells of the ubiquitous nerve sheath. Objective: To describe the operative steps and technical aspects of robotic laparoscopic resection of pelvic schwannoma. Methods: We describe 2 patients with pelvic schwannoma: a 34-year-old woman with schwannoma of the right lumbosacral trunk and a 58-year-old woman with schwannoma of a left S1 nerve. Pain was the main symptom in both patients. The diagnosis was confirmed by magnetic resonance imaging and nerve biopsies. Both patients were operated on by robotic laparoscopy. Results: Lesions were totally enucleated after incising the epineurium. After dissection of the schwannoma, the vascular pedicle and nerve fascicles involved were identified, coagulated, and then sectioned. The remaining fascicles of the nerve were preserved. The postoperative course was uneventful in both patients. With follow-up of 9 and 13 months, both patients obtained complete pain relief with no neurological sequelae. Conclusion: Robotic laparoscopic resection of pelvic nerve tumors such as schwannomas is technically feasible.

scholarly journals Expression Of Cytokeratin 18 In The Peripheral Nerves

2016 ◽  
Vol 60 (2) ◽  
pp. 5-10
Author(s):  
E. Marettová
Keyword(s):  
Skeletal Muscle ◽  
Smooth Muscle ◽  
Epithelial Cells ◽  
Peripheral Nerves ◽  
Cytokeratin 18 ◽  
Ductus Deferens ◽  
Nerve Sheath ◽  
Myelinated Nerves ◽  
Perineurial Cells ◽  
Perineurial Sheath

Abstract The perineurium constitutes the basis for the regulation of endoneurial fluid homeostasis. In the work presented here, cytokeratin 18, as an immunohistochemical marker for epithelial cells, was used to identify the perineurium in the peripheral nerves of two species. Two organs, rich in peripheral nerves, were used; the tongue of the bull and the ductus deferens of the male goat. Special attention was paid to one of the the nerve sheath cells - the perineurial cells of myelinated nerves in the skeletal muscle of the tongue and in the smooth muscle in the wall of the ductus deferens. A positive reaction to cytokeratin 18 was found in the perineurial cells of the perineurial sheath in the nerves of various sizes. No difference in the reactivity was observed between the peripheral nerves of the tongue and that of the ductus deferens.

scholarly journals Variant Branching Pattern of Axillary Artery: A Case Report

2012 ◽  
Vol 2012 ◽  
pp. 1-3 ◽  
Author(s):  
Swamy Ravindra Shantakumar ◽  
K. G. Mohandas Rao
Keyword(s):  
Case Report ◽  
Cardiovascular Diseases ◽  
Axillary Artery ◽  
Diagnostic Procedures ◽  
Common Trunk ◽  
Branching Pattern ◽  
Undergraduate Medical Students ◽  
Medical College ◽  
The Third ◽  
Male Cadaver

During routine dissection of an approximately 50-year-old male cadaver for the undergraduate medical students at Melaka Manipal Medical College, Manipal University, Manipal, we came across a variation in branching pattern of right axillary artery. The second part of axillary artery gave rise to a common trunk which divided into the subscapular and lateral thoracic arteries. The third part of right axillary artery gave rise to anterior and posterior circumflex humeral arteries. Variations in the branching pattern of axillary artery are important for the surgeons performing interventional or diagnostic procedures in cardiovascular diseases.

scholarly journals Spectrum of primary salivary gland tumors with special emphasis on their management and outcome at a rural tertiary care centre

2020 ◽  
Vol 7 (3) ◽  
pp. 818
Author(s):  
Dwaipayan Samaddar ◽  
Jaya B. Samaddar ◽  
Ahmad M. Aziz
Keyword(s):  
Salivary Gland ◽  
Tertiary Care ◽  
Study Data ◽  
Salivary Gland Tumors ◽  
P Value ◽  
Malignant Tumours ◽  
Tertiary Care Centre ◽  
Female Ratio ◽  
Medical College ◽  
Benign Tumours

Background: Salivary gland tumors (SGT) are uncommon tumors of diverse histopathology accounting for <2% of all neoplasms. Early diagnosis differentiates between benign and malignant SGT and less extensive surgical procedure can be performed. The objective is to study the spectrum of primary SGT with special emphasis on their distribution, treatment and outcome at a rural tertiary care centre.Methods: A prospective observational study was conducted on 30 consecutive primary SGT patients attending the Departments of Surgery and Otorhinolaryngology of North Bengal Medical College and Hospital over a period of one and half years. All patients were clinically evaluated, investigated, treated accordingly and followed up during the period of study. Data was collected and compiled in Excel sheet and analysed using GraphPad Software and GraphPad QuickCalcs 2018 (San Diego, CA). A p value <0.05 was considered statistically significant.Results: Maximum patients (83.3%) were in the age range of 31-60 years. The male to female ratio was 1:4 for benign tumours and 1:1 for malignant tumours. Malignant cases were 66.67%. Involvement of parotid gland was the commonest (43.3%) and mostly presented with swelling (73.3%). Pleomorphic salivary adenoma was the commonest benign tumor (33.3%) and mucoepidermoid carcinoma was the commonest malignant tumor (16.7%). Permanent facial palsy was observed in 2 (9.5%) and recurrence in 4 patients (19%).Conclusions: SGT are rare and present in various modes. Malignant cases were singularly more in this study.

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