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Updated: Mar 25, 2026

Minimally Invasive Thumb-sized Pterional Craniotomy for Surgical Clip Ligation of Unruptured Anterior Circulation Aneurysms
Published on: August 11, 2015
Infraoptic anterior cerebral artery: case series report and literature review
Myoung Soo Kim1, Sook Young Sim2
1Chief of Brain Center, Pohang SM Christianity Hospital, 351 Poscodaero, Namku, Pohang, 790-822, Gyeongbuk, Republic of Korea. hanibalkms@hanmail.net.
Abstract:
An infraoptic course of the precommunicating anterior cerebral artery (A1 segment) is a rare anomaly. We report three patients with an infraoptic A1 diagnosed by computed tomography angiography and we review the literature focusing on embryological development. In all three patients, a left infraoptic A1 that originated from the ophthalmic level of the internal carotid artery was diagnosed incidentally. Only one patient had a normal supraoptic A1. The embryogenesis of this anomaly is unclear. We propose that an error in the development of the definitive ophthalmic artery is possible mechanisms giving rise to this anomaly.
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