neural sheath
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2021 ◽  
pp. 826-831
Author(s):  
Erica M. Roman Hernandez ◽  
Sri Laxmi Valasareddi ◽  
Jarrod Adkison ◽  
Henna Awan ◽  
Krishnamohan R. Basarakodu ◽  
...  

Melanotic Schwannomas are rare neural sheath tumors with distinctive findings of both Schwann cells and melanocytic cells. Recognition of this entity has prompted the importance of distinction from similar tumor types such as melanomas. Early diagnosis facilitates removal of the mass with less risk of local invasion and metastasis. Although previously known as mostly benign lesions, malignant conversion and recurrence are recognized. This paper presents a patient with melanotic schwannoma, describes the distinctive features that will separate it from melanoma, and addresses the possibility of further guided therapy through next-generation sequencing.


2021 ◽  
pp. 164-170
Author(s):  
Ghadah Alhammad ◽  
Alaa Alsaad ◽  
Tariq Aljohani ◽  
Abdulmajeed Alajlan

Schwannoma is a benign neoplasm that originates from the neural sheath of Schwann cells. Although extracranial schwannomas are commonly observed in the head and neck region, only 1% are found in the intraoral cavity. This article describes the first case in the Eastern Mediterranean region of a lower lip schwannoma in a 17-year-old male patient.


2021 ◽  
Vol 111 (2) ◽  
Author(s):  
Adi Pajazetovic ◽  
Amram Dahukey

A schwannoma is a benign tumor with a neurogenic origin that affects peripheral nerves. It arises from the neural sheath of the peripheral nerves. We present a case of a 54-year-old woman who presented to our clinic with a painful schwannoma of her superficial peroneal nerve at the level of the ankle. The patient was treated with surgical excision, and diagnosis was confirmed with pathologic analysis.


2021 ◽  
Vol 49 (2) ◽  
pp. 030006052098773
Author(s):  
Kai Xuan Lim ◽  
Karl Wu

Schwannoma or neurilemmoma is a common soft tissue neoplasm arising from the neural sheath of Schwann cells. However, intraosseous schwannoma is rare, accounting for less than 0.2% of primary bone tumours. Several variants of schwannoma have been reported; among them, intraosseous schwannoma with ancient change is extremely rare. This current report presents an extremely rare case of ancient intraosseous neurilemmoma. The patient presented with right elbow pain and disability. A radiolucent, well-defined, lobulated lesion with a thin sclerotic rim in the proximal ulnar metaphysis that had caused a pathological fracture was noted. The mass was surgically excised using marginal resection and bone curettage was undertaken. The bone deficit was grafted with hydroxyapatite and β-tricalcium phosphate and augmented with bone cement. There were no signs of any recurrence after 3 years. This is the first case of an ancient intraosseous schwannoma of the proximal ulna. Although rare, intraosseous schwannoma should be considered in the differential diagnosis of radiographically benign-appearing osseous tumours in the bone. The cement technique is recommended for the treatment of intraosseous schwannoma.


2020 ◽  
Vol 48 (9) ◽  
pp. 030006052093530
Author(s):  
Chao Gao ◽  
Feng-Chi Zhu ◽  
Bo-zhao Ma ◽  
Hao-Wen Jia ◽  
Jian Lu ◽  
...  

Neurilemmoma, also known as schwannoma or neurinoma, is a tumor that originates from neural sheath Schwann cells. Giant neurilemmomas derived from the retroperitoneum have rarely been reported. We herein describe a woman with a giant retroperitoneal neurilemmoma that was initially incorrectly diagnosed as an inflammatory abdominal mass. The tumor extended from the patient’s hypogastrium to her pelvic cavity and measured 20 × 15 × 10 cm. The tumor was excised via laparotomy and diagnosed as a retroperitoneal neurilemmoma through histological and immunohistochemical examination. Although rare, particularly in the giant form, neurilemmoma should be considered as an important differential diagnosis in patients with a retroperitoneal tumor or inflammatory abdominal mass. Complete excision should be considered for the potential cure of giant retroperitoneal neurilemmomas.


2020 ◽  
Vol 2020 ◽  
pp. 1-5
Author(s):  
Mussa H. AlMalki ◽  
Metib Alotaibi ◽  
Mohammad Maswood Ahmad ◽  
Muhammad Amin ur Rahman ◽  
Turki Alharthi

Schwannoma is a benign neurogenic tumor originating from the neural sheath of Schwann cells. It is an extremely rare cause of adrenal adenoma which is very difficult to diagnose preoperatively. We report the case of a right adrenal schwannoma discovered incidentally in a 62-year-old woman during evaluation of right flank pain. The biochemical and hormonal evaluations were unremarkable. Radiological examination revealed a 4.8 cm lesion keeping with right adrenal adenoma. Surgical intervention was done due to the large size of the tumor, and laparoscopic right adrenalectomy was performed. The postoperative course was uneventful. Histological examination established the diagnosis of schwannoma, which was further confirmed by immunohistochemical staining. In conclusion, adrenal schwannoma is extremely rare and can be misdiagnosed as nonsecreting adrenal adenoma. Complete surgical excision is the treatment of choice which is associated with favorable outcome and also helps in clarifying its histopathological nature.


2018 ◽  
pp. 137-140
Author(s):  
Orimisan Belie ◽  
Bolaji O Mofikoya ◽  
Okezie O Kanu ◽  
Andrew O Ugburo

2017 ◽  
Vol 78 (02) ◽  
pp. e68-e70
Author(s):  
Joshua Burks ◽  
Robert Briggs ◽  
Chad Glenn ◽  
John Greenert ◽  
Cordell Baker ◽  
...  

Here we present the case of a 36-year-old man who was found to have a symptomatic malignant neural sheath tumor growing from the C2 nerve root following a period of progressively worsening headaches. The patient was successfully treated with surgical resection resulting in resolution of cranial nerve deficits. Though uncommon, malignant peripheral nerve sheath tumor must be considered in the differential diagnosis of tumors involving the cervical nerve roots and carotid space.


2017 ◽  
Vol 9 (1) ◽  
Author(s):  
Tayyar Taylan Öz ◽  
Birol Aktaş ◽  
Korhan Özkan ◽  
Burak Özturan ◽  
Bulent Kilic ◽  
...  

Schwannomas are benign neurogenic tumors of peripheral nerves that originate from neural sheath. The aim of this case report is to bring to mind the schwannoma in the patient with knee pain. A 39-year-old woman presented with a complaint of knee pain of three months history. After surgical intervention, the patient’s complaints completely disappeared in the post-operative period. This should come to mind in the differential diagnosis of knee pain.


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