Related Experiment Video
Updated: Apr 30, 2026

Minimally Invasive Thumb-sized Pterional Craniotomy for Surgical Clip Ligation of Unruptured Anterior Circulation Aneurysms
Published on: August 11, 2015
Aneurysmal subarachnoid hemorrhage with concomitant posterior communicating artery fenestration
Gregory M Weiner1, Ramesh Grandhi, Nathan T Zwagerman
1Department of Neurological Surgery, University of Pittsburgh School of Medicine , Pittsburgh, PA , USA.
Abstract:
Fenestrations of the posterior communicating artery (PCoA) are extremely rare. Associated aneurysms have only been documented three times in the literature, and none associated with a subarachnoid hemorrhage. We describe a 52-year-old female who presented with a subarachnoid hemorrhage secondary to a ruptured saccular aneurysm at the proximal limb of a fenestrated right PCoA. The patient was also found to have bilateral middle cerebral artery (MCA) aneurysms. Surgical management included surmising the etiology of the subarachnoid hemorrhage with subsequent clipping of both the right PCoA and MCA aneurysm. The potential embryological mechanisms leading to a PCoA fenestration are discussed.
Related Concept Videos
The Arch of Aorta
Encircling the heart, the coronary arteries form a ring-like structure before...
Hemorrhagic Stroke l: Introduction
Hemorrhagic Stroke ll: Pathophysiology
Aneurysm III: Interprofessional Care
Aneurysm II: Clinical Manifestations and Diagnostic Studies

