title: Trans-postpyramidal fissure approach for ventral vermian cavernous hemangioma.
abstract: A 54-year-old man presented with a rare case of cavernous angioma located in the ventral vermis manifesting as sudden onset of vertigo, followed by cerebellar ataxia. T(1)-weighted magnetic resonance imaging revealed a 1.5-cm homogeneously enhanced lesion in the ventral vermis. The postpyramidal fissure was opened widely, and upward exploration through the incision enabled piecemeal removal of the lesion without deterioration of the symptoms. The histological diagnosis was cavernous hemangioma with ruptured enlarged varices. The trans-postpyramidal fissure approach allows visualization of the entire fourth ventricle and avoids damaging the cerebellar nuclei and major postoperative cerebellar dysfunction.
authors: Department of Neurosurgery, Teikyo University Chiba Medical Center, Ichihara, Japan. hnakaguti@gmail.com
authors: Hiroshi
authors: H
authors: Nakaguchi
authors: Katsumi
authors: K
authors: Hoya
authors: Shoko
authors: S
authors: Yamada
authors: Mineko
authors: M
authors: Murakami
authors: Akira
authors: A
authors: Matsuno
authors: Kazuto
authors: K
authors: Yamazaki
authors: Yasuo
authors: Y
authors: Ishida