Incidentally-discovered Aneurysmの経験

Incidentally-discovered Aneurysm:a Report of Eight Cases

Ⅰ．はじめに

　脳動脈瘤治療の理想は，脳動脈瘤が近接する脳神経を圧迫し麻痺症状を呈するか，または破裂してくも膜下出血を起こす以前に，直接手術を行うことであると思われる．しかし，無症状の脳動脈瘤を発見することは，現在のところ偶然の機会によるしかないであろう．我々は他疾患の血管写による検索中，偶然脳動脈瘤を8例に発見し，うち原疾患の予後が良好と思われる3例に直接手術を行った．脳血管写の注意深い観察により，偶然脳動脈瘤を発見することは稀有ではない印象を受けたので，皆干の文献的考察を加えてり症例を報告する．

There have been only a few reports of asymptomatic aneurysm clinically treated up to the present. The authors incidentally found eight cases of intracranial aneurysm: five cases with brain tumor, one with brain abscess and the remaining three with head injury. It may be considered that the careful observation of angiograms could reveal more asymptomatic aneurysms.

The ideal treatment of aneurysm should be direct operation before rupture. But it is difficult to find out them before the onset of signs and symptoms of subarachnoid hemorrhage or cranial nerve involvement.