後頭蓋窩脳静脈性血管腫

概要

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The authors report 2 cases of venous angioma of the posterior fossa, an uncommon disorder. Case 1: A 17-year-old boy was admitted complaining of dizziness, headache, and vomiting. Neurological examination disclosed conjugate deviation to the right, left-sided limb and truncal ataxia, gait disturbance, and dysarthria. Plain computerized tomography (CT) showed a high-density area indicating a hematoma in the left cerebellum. Enhanced CT showed a linear enhance-ment inside the hematoma, probably corresponding to a dilated draining vein. Vertebral angiography revealed a venous angioma in the early venous phase that was drained into a dilated precentral cerebellar vein. Case 2: A 33-year-old female was admitted complaining of nausea, vomiting, and vertigo. Neurological examination disclosed dysarthria, right-sided limb and truncal ataxia, and Bruns nystagmus. Plain CT showed a high-density area indicating a hematoma in the right cerebellum. Enhanced CT showed a nodular enhancement inside the hematoma, probably cor-responding to a dilated draining vein. Vertebral angiography revealed a venous angioma in the ear-ly venous phase that was drained into a dilated inferior hemispheric vein. Surgical removal of the angioma was successfully performed in both cases. Radical operation is recommended in cases of hematoma because the frequency of rebleeding is high.
日本脳神経外科学会の論文
1984-08-15