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KMID : 0378619950120010085
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Baptist Hospital Medical Journal
1995 Volume.12 No. 1 p.85 ~ p.95
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Surgical Treatment of Posterior Circulation Aneursms
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Abstract
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Aneurysms arising from the posterior circulation are 5~10% of total intracranial aneurysms. Although many neurosurgeons have challenged with various innovations but the confined surgical space, complicated anatomical structure and many small
perforators to vital organ of brain were remained the barrier that we have to overcome.
From July 1987 to December 1994, we have been operated on 23 cases of posterior circulation aneurysms among 409 cases of surgically treated all intracranial aneurysms. They present 5.6% of all intracranial aneurysms, the average age of these
patients
was 49 year old. The ratio of male to female was 1 : 1.8.
The number of basilar bifurcation artery aneurysms (BBAA) were 14(61%), the posterior cerebral artery (PCA) aneurysms 3(13%), the upper basilar trunk aneurysm 1, posterior inferior cerebellar artery(PICA) anterior inferior cerebellar artery(AICA)
aneurysm 1 and vertebral artery aneurysm 1, Five patients have accompanied with anterior circulation aneurysm and one patient had concomitant arteriovenous malformation.
We have successfully clipped 12 cases and wrapped 2 cases of BBAA aneurysms through modified pterional approach and subtemporal approach according to the height of basilar bifurcation and the other posterior circulation aneurysms are all clipped
through
most available approaches including lateral, far-lateral suboccipital and interhemispheric approach.
Surgical outcome was good in 15 cases, fair in 4 cases, poor in 3 cases and one patient expired.
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