Endovascular coiling is a well established technique for the treatment of s
elected intracranial aneurysms, but its long-term efficacy, including the r
ate of rehaemorrhage from treated lesions, remains to be clearly determined
. We report a case in which the rerupture of a small aneurysm occurred 12 m
onths after embolization, despite angiographic occlusion on immediate post-
procedural and 6-month check angiography.