後大脳動脈—後側頭動脈分岐部動脈瘤の1例

Aneurysm at the PCA Posterior Temporal Artery Junction: A case report

I．はじめに

　後大脳動脈瘤は，脳動脈瘤の中でも比較的少なく，Pia^10）らはすべての脳動脈瘤の1％とも，椎骨脳底動脈瘤の15％とも述べている．今回著者らは，脳内出血で発症した四丘体槽部後大脳動脈瘤1例を経験したので，これまでの報告例と合わせて文献的考察を加えて報告する．

A case of saccular aneurysm located at the PCA posterior temporal artery junction (E portion of PCA) was reported. A 35-year-old man was referred to us for surgical treatment of intracerebral hematoma in the right temporo-parietal lobes. On admission, the patient was somnolent and there was right oculomoter palsy, left homonymous hemianopsia and left hemiparesis.

Left vertebral angiograms revealed a saccular aneurysm at the quadrigeminal segment of the post-erior cerebral artery on the right.