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Journal of Korean Neurosurgical Society 1994;23(7): 821-826.
Nontraumatic Intracranial Dissecting Aneurysm of Vertebral Artery: Case Report.
Byun Joo Jung, Kyung Soon Ahn, Yong Han Kim, Young Bo Sim, Joon Ho Song, Sae Moon Oh, Sun Kil Choi, Seung Koo Kang
Department of Neurosurgery, College of Medicine, Hallym University, Seoul, Korea.
We present two cases with dissecting aneurysm of intracranial vertebral artery. One of them had brain stem infarction and the other one developed subarachnoid hemorrhage. Cerebral angiogram revealed fusiform dilatation with proximal and distal narrowing of the affected vessel. Magnetic resonance imaging showed subacute blood clot inthe right vertebral artery which suggested dissection. Differentiation from vasospasm and from atherosclerosis is critical. At surgical exposure, the aneurysms were appeared as dark-purplish sausage like masses. The proximal portions of the intracranial vertebral arteries were clipped. The post-operative courses were benign and at present they regained their normal daily lives.
Key Words: Dissecting aneurysm; Vertebral artery; Brain stem infarction; Subarachnoid hemorrhage; Proximal clipping
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