脳血管写上，消失し，再出現した脳動脈瘤の1例

A Case Presentation in Which Cerebral Aneurysm Disappeared Then Recurred Documented by Cerebral Angiography

I．はじめに

　脳血管写上，当初造影されていた動脈瘤がその後の検査で消失したとする報告は散見するが^1,3-5,7-9），いったん消失した動脈瘤が再び完全に出現したとする報告は少なく^2,10），稀なことと思われる．更に重要なことは，このことは脳血管写上の動脈瘤の消失が必ずしも永久的な治癒を意味していないことである．私たちは最近このような例を経験したので報告する．

A 50-year-old man was admitted to this hospital with an onset one day previously of headache and impaired consciousness. Cerebral angiography performed on the date of admission revealed a middle cerebral artery aneurysm, measuring approximately 7×8×9 mm. The patient was begun on t-AMCHA 6g/day, hypotensive agents and anticonvulsants. On the second day after administration, the patient exhibited a temperature of 38℃ which continued for 3weeks and was of unknown ethiology.

Repeat cerebral angiography was performed two weeks later, and examination of the right carotic artery revealed that the aneurysm had disappeared.