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  • Title: De novo vertebral artery-posterior inferior cerebellar artery aneurysm: a case report.
    Author: Kanemoto Y, Hisanaga M, Bessho H.
    Journal: Surg Neurol; 1997 May; 47(5):473-5. PubMed ID: 9131032.
    Abstract:
    BACKGROUND: There have been few reports of de novo aneurysms in the posterior circulation since most de novo aneurysms occur in the anterior circulation. CASE DESCRIPTION: At 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. CONCLUSIONS: The 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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