脳梗塞症状を呈したGiant fusiform aneurysmの2症例

Two Cases of Giant Fusiform Aneurysm presenting Ischemic Attacks

I．はじめに

　巨大脳動脈瘤は破裂によるくも膜下出血および脳腫瘍類似の頭蓋内占拠性症状をきたすとされるが，脳虚血症症状を呈したとする報告例は少数散見されるにすぎない^{2,4-6,8-10,12）}．giant fusiform aneurysmでは一部血栓化している場合も多く，またfusiform dilatationそのものによる血行不全も考えられ，脳虚血症状を呈する可能性はさらに高いものと思われる．

　最近われわれは，脳梗塞を呈したpartially thrombo-sed giant fusiform aneurysmの1剖検例を含む2症例を経験したので報告する．

It is said that major clinical sign of giant fusiform aneurysm is so-called mass sign compressing surround-ing tissues and ischemic attack caused by the aneurysm is very rare.

The authors experienced such uncommon two patients with partially thrombosed fusiform aneurysm who developed ischemic attack.

Case 1: A 68-year-old man was admitted to our hospital in semicomatous state with occular bobbing and decorticate posture of sudden onset.