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Updated: Aug 22, 2026

Minimally Invasive Thumb-sized Pterional Craniotomy for Surgical Clip Ligation of Unruptured Anterior Circulation Aneurysms
Published on: August 11, 2015
[Trans-longitudinal fissure keyhole approach for distal anterior cerebral artery aneurysms]
Shuo Wang1, Ji-zong Zhao, Rong Wang
1Department of Neurosurgery, Beijing Tiantan Hospital, Affiliate of Capital University of Medical Sciences, Beijing 100050, China. captain9858@vip.sina.com
Objective:
To explore the significance of the trans-longitudinal fissure keyhole approach for distal anterior cerebral artery aneurysms.
Methods:
From March 2000 to October 2002, the trans-longitudinal fissure keyhole approach was adopted for 11 cases of distal anterior cerebral artery aneurysms, which including 9 cases of A2 segment and 2 cases of A3 segment.
Results:
All cases were clipped successfully without any obvious neurological deficit and surgical death. Post-operative digital subtraction argiography demonstrated that all aneurysms disappeared. There was no need for foreign blood transformation. The mean hospitalization was 11 days.
Conclusions:
The keyhole approach is an effective and minimal-invasive approach in treating distal anterior cerebral artery aneurysms. It can also shorten hospitalization, decrease foreign blood transformation rate and reduce medical cost.

