Hypoglossal nerve schwannoma with intratumoral hemorrhage
- نوع فایل : کتاب
- زبان : انگلیسی
- مؤلف : Shigeo Ohba Makoto Inaba Yu Kinoshita Toru Nakagawa Kazuhiko Shimizu Hideki Murakami
- چاپ و سال / کشور: 2011
Description
Intratumoral hemorrhage of hypoglossal schwannoma is very rare. A 37-year-old man was admitted to our hospital with severe headache and gait disturbance. Radiologic examination revealed subarachnoid hemorrhage and a well-circumscribed enhanced lesion compressing the medulla oblongata. Gross total removal of the intracranial tumor was performed. Histopathological examination revealed the characteristic features of a schwannoma. The tumor had several hemorrhagic areas and numerous hyalinized blood vessels. Although the mechanism of hemorrhage from schwannomas is unclear, it is hypothesized that tumor vessels showing focal sinusoidal dilatation and hyaline thickening of the walls lead to spontaneous thrombosis with consequent necrosis, and often hemorrhage.
Brain Tumor Pathol Received: 10 May 2011 / Accepted: 14 July 2011
