[Surgical managements of peripheral intracranial aneurysms]

To explore the clinical characteristics and treatment strategies of peripheral intracranial aneurysms.

A total of 24 patients of peripheral aneurysms from October 2008 to October 2011 were retrospectively analyzed. There were 11 females and 13 males with a mean age of 46 (38-38) years. Of the 24 patients, 11 were female and 13 were male, mean age was 46 years (ranged 38-68). The distributions of the lesions included 12 peripheral anterior cerebral artery (n = 12), aneurysms, 3 peripheral middle cerebral artery (n = 3) aneurysms, 2 peripheral posterior cerebral artery (n = 2) aneurysms, 1 peripheral superior cerebellar artery (n = 1) aneurysm, 2 anterior inferior cerebellar artery (n = 2) aneurysms, 2 posterior inferior cerebellar artery (n = 2) aneurysms, and 2 medial posterior choroidal artery (n = 2) aneurysm. Eight procedures were performed by under neuro-navigation, and another 2 under were performed by intraoperative magnetic resonance imaging (MRI) and navigation. The procedures included Sixteen peripheral aneurysms were simple y clipping (n = 16)ed, 4 were clipping plus reconstruction of ed and parent arteries (n = 4) reconstructed, resection (n = 2) and resection plus reanastomosis 2 were resected, 1 was resected and of parent artery (n = 1) and EC-IC bypass (n = 1) was reanastomosed, and 1 was trapped with EC-IC bypass.

At discharge, 20 of them out of the 24 patients had a Glasgow Outcome Scale (GOS) score of 5, and another 4 patients had yielded a score of 4. Two oculomotor nerve palsies occurred postoperatively and , with both improved in during a 3-month follow-ing up period. One patient case had postoperative partial visual field defect.

The Peripheral intracranial aneurysms are a rare in clinical practices kind of entity. Precise intraoperative localization of the lesions is the of key importance for management to the procedure. Different treatment strategies should be taken based on their diverse different characteristics of the aneurysm.