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KMID : 0359819960250010131
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Journal of Korean Neurosurgical Society
1996 Volume.25 No. 1 p.131 ~ p.137
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Aneurysms of Proximal(A1) Segment of Anterior Cerebral Artery
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안재근
박영섭/박성찬/조경근/이경진/최창락
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Abstract
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Aneurysms located on the proximal (Al) segment of the anterior cerebral artery are known for their rarity. In this study. eight patients. all with aneurysms arising from the proximal (Al) segment of the anterior cerebral artery. were selected
from
625
patients who underwent surgical treatment under the diagnosis of cerebral aneurysm. Each cases were reviewed as an attempt to investigate the demographic and clinical features of these patients. The incidence of Al aneurysm was 1.3%. Multiple
aneurysms
occurred in one (12.5%) out of the 8 cases and the bleeding was from the Al aneurysm. The mean age of the eight patients was 56.8 years L there were six women and two men. The aneurysms were classified according to the mode of origin of the
aneurysm in
relation to the Al segment : in 4 of the 8 cases. the aneurysms were found to be originated from the junction of the Al segment and a perforating artery ; in which the remaining 4 cases. they are from the Al segment directly. Computerized
tomography
(CT) of these aneurysms revealed subarachnoid hemorrhage extending to the suprasellar and sylvian cisterns similar to that of the posterior communicating artery aneurysm or the internal carotid artery bifurcation aneurysm Bleeding which extends
to
the
interhemispheric cisterns or septum pellucidum. while frequently occurrs during the rupture of anterior communicating artery aneurysm are rare in these cases. Because there are many differences between the findings in authors series and these in
the
literature. coordinated studies are necessary to define the demographic and clinical features of Al aneurysm in Korea.
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KEYWORD
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