• Surg Neurol · May 1997

    Review Case Reports

    De novo vertebral artery-posterior inferior cerebellar artery aneurysm: a case report.

    • Y Kanemoto, M Hisanaga, and H Bessho.
    • Department of Neurosurgery, Semboku National Hospital, Osaka, Japan.
    • Surg Neurol. 1997 May 1; 47 (5): 473-5.

    BackgroundThere have been few reports of de novo aneurysms in the posterior circulation since most de novo aneurysms occur in the anterior circulation.Case DescriptionAt the age of 46 years, the patient suffered a subarachnoid hemorrhage due to a ruptured right middle cerebral artery aneurysm, which was subsequently clipped. Eight years later, the patient experienced another subarachnoid hemorrhage of the posterior fossa predominance. A cerebral angiogram demonstrated a right vertebral artery-posterior inferior cerebellar artery (VA-PICA) aneurysm that had not been noted on the previous study.ConclusionsThe first case of a subarachnoid hemorrhage from a right de novo VA-PICA aneurysm is presented. The characteristics of de novo aneurysms in the posterior circulation are discussed.

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