抄録
Two cases of patients with multiple peripheral aneurysms are reported; four aneurysms arising from the left callosomarginal artery feeding an arterivenous malformation (AVM) in a 51-year-old female and two aneurysms from the left posterior inferior cerebellar artery not associated with AVM in a 53-year-old female. In the former case, the AVM was partly thrombosed and the most distal aneurysm was shown to be largery obliterated in the preoperative angiography. In the latter case, the proximal aneurysm was not visualized in the preoperative angiography.