脳静脈性血管腫の2例—神経放射線学的所見を中心に

Two Cases of Cerebral Venous Angioma:With special referrence to the neuroradiological diagnosis

I．はじめに

　脳静脈性血管腫は脳血管奇形の一型であり，極めて稀なものである．調べえた限りでは31例の報告^{1-3,5-9,11-15）}があり，われわれは，それらの報告の神経放射線学的所見と一致する2例を経験したので報告し，若干の文献的考察を加える．

Cerebral venous angioma is a very rare vascular malformation of the brain. Only 31 cases have been reported previously. This report adds two cases of venous angioma studied by the neuroradiological examinations.

Case 1. T.O. A 33-year-old man with a 5 year history of episodes of loss of conciousness and headache. Physical and neurological examinations revealed no evidence of abnormality. The arterial phase of the right carotid angiogram was normal. In the capillary phase, an ill-defined area of faint blush was noted in the right frontoparietal region.