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Updated: May 19, 2026

Endovascular Perforation Model for Subarachnoid Hemorrhage Combined with Magnetic Resonance Imaging (MRI)
Published on: December 16, 2021
An unusual aneurysm of a basilar perforating artery presenting with a subarachnoid haemorrhage
Vino Apok1, Andrew Tarnaris, Howard L Brydon
1Department of Neurosurgery, University Hospital of North Staffordshire, North Staffordshire Royal Infirmary, Stoke-on-Trent, UK.
Abstract:
A 65-year-old man had a perimesencephalic subarachnoid haemorrhage with normal angiography initially. After a rebleed 5 days later, a repeat angiogram revealed a pea-like aneurysm a short distance behind and below the basilar bifurcation. It was not amenable to endovascular treatment and the feeding vessel was coagulated and divided at open surgery via a sub temporal approach. He developed a right hemiparesis and dysphasia, from which he slowly recovered. Basilar perforating artery aneurysms are extremely rare, with only 4 previous cases reported.
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