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Updated: Sep 4, 2025

Minimally Invasive Thumb-sized Pterional Craniotomy for Surgical Clip Ligation of Unruptured Anterior Circulation Aneurysms
Published on: August 11, 2015
How I do it: left posterior cerebral artery P1-2 segment dissecting aneurysm distal clipping via an A1-RAG-P2 bypass
Peixi Liu1,2,3,4,5, Yuan Shi1,2,3,4,5, Qingzhu An1,2,3,4,5
1Department of Neurosurgery, Huashan Hospital, Shanghai Medical College, Fudan University, No. 12 Wulumuqi Zhong Road, Shanghai, 200040, China.
Background:
Posterior cerebral artery (PCA) P1-2 segment dissecting aneurysms are difficult because regular craniectomy aneurysm clipping or intravascular interventional therapy is not applicable.
Method:
We report distal clipping of a PCA P1-2 segment dissection aneurysm with an anterior cerebral artery (ACA) A1-radial artery graft-PCA P2 bypass.
Conclusion:
This case demonstrates the value of an ACA-RAG-PCA bypass in the therapy of a PCA dissecting aneurysm.

