動脈瘤増大によりWeber症候群，閉塞性水頭症を呈した1症例

Growing Aneurysm Presenting with Weber' Syndrome and Obstctive Hydrocephalus: A case report

I．はじめに

　脳動脈瘤が大きい場合，mass lesionとして圧迫症状を示すことがあるが，その自然経過については余り知られていない．今回著者らは，くも膜下出血にて発症した多発脳動脈瘤で，未破裂未処理であった動脈瘤が増大してWeber症候群と閉塞性水頭症をきたし，動脈瘤は完全血栓化した症例を経験したので，若干の文献的考察を加え報告する．

A case with two cerebral aneurysms, in which one at the origin of the left superior cerebellar artery (SCA) grew and presented with Weber's syndrome and ob-structive hydrocephalus, is reported.

The patient was a 69-year-old female, who had se-vere headache and vomited. On admission, neck stiff-ness was recognized. CT scan showed findings of sub-arachnoid hemorrhage. Angiograms demonstrated two saccular aneurysms at the right middle cerebral artery (MCA) bifurcation and at the origin of the left SCA. Craniotomy and neck clipping of the aneurysm at the right MCA was performed.