未破裂脳動脈瘤に対するコイル塞栓術(<特集>未破裂脳動脈瘤)  [in Japanese] Coil Embolization of Unruptured Intracranial Cerebral Aneurysms(<Topics>Unruptured Cerebral Aneurysm)  [in Japanese]

Deciding the best treatment of unruptured cerebral aneurysms (UA) is difficult because the natural history of UA remains uncertain. We report our experience of coil embolization for UA and discuss the safety and efficacy of coil embolization for UA. Between September 1997 and April 2004, 131 cases were treated using coil embolization in our hospital. The morbidity rate was 1.8% and the mortality rate was 0. During the follow-up period, aneurysm rupture occurred in 2 cases (14%). And 13 cases (10%) showed coil compaction, so we performed second embolizations to prevent aneurismal rupture. The results showed that our strategy of using GDC is safe and reliable. We consider that treatment of UA requires safety first and it is important to avoid complications associated with the intervention.