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Anterior communicating artery aneurysm associated with duplicated hypoplastic right A1 segment
Ioannis N Mavridis, Sophia Anagnostopoulou, Department of Anatomy, University of Athens School of Medicine, 11527 Athens, Greece
Author contributions: Mavridis IN studied the case and wrote the article; Anagnostopoulou S provided the material of the study.
Correspondence to: Ioannis N Mavridis, MD, PhD, Department of Anatomy, University of Athens School of Medicine, Mikras Assias str. 75, Goudi, 11527 Athens, Greece. pap-van@otenet.gr
Telephone: +30-697-8327199 Fax: +30-210-2833600
Received: February 11, 2013
Revised: April 15, 2013
Accepted: May 8, 2013
Published online: June 28, 2013
Processing time: 112 Days and 7 Hours
Revised: April 15, 2013
Accepted: May 8, 2013
Published online: June 28, 2013
Processing time: 112 Days and 7 Hours
Core Tip
Core tip: Variations of the anterior cerebral artery (ACA)-anterior communicating artery (ACoA) complex are commonly observed when associated with a symptomatic intracranial aneurysm. We report an asymptomatic ACoA aneurysm associated with duplicated hypoplastic A1 segment of the right ACA, observed in a 70-year-old female. Furthermore, the aneurysm, practically substituting the ACoA, caused a remarkable depression on the internal surface of the right frontal lobe, antero-inferior to the anterior commissure and anterior to the optic chiasm. A literature review of similar cases and underlying mechanisms of such anomalies is presented.