Ruptured posterior inferior cerebellar artery aneurysm at fenestrated vertebral artery
Diagnosis certain
Presentation
Subarachnoid hemorrhage.
Patient Data
Age: 55 years
Gender: Female
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Info
Fenestration at left vertebral artery just distal to the PICA origin. The aneurysm projects superio-medially into the brainstem. The left vertebral artery is dominant. The left PCA has a fetal origin.
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Info
Intra-operative photo post clipping.
Far lateral approach to the PICA aneurysm after clipping. Note the rootlets of cranial nerves (IX, X, XI).
Case Discussion
Posterior circulation aneurysms are a much less common cause of subarachnoid hemorrhage than anterior circulation aneurysms.
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