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.
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.
Authors: Ahmad F Tamimi; Nosaiba T Al Ryalat; Malik E Juweid; Rahma M Doudeen; Qutada Al-Soub; Tareq M A Kanaan; Iskandar A Tamimi Journal: Am J Case Rep Date: 2021-02-08