Triantafyllou George, Papadopoulos-Manolarakis Panagiotis, Tsakotos George, Piagkou Maria
Department of Anatomy, School of Medicine, Faculty of Health Sciences, National and Kapodistrian University of Athens.
Department of Neurosurgery, General Hospital of Nikaia-Piraeus, Athens, Greece.
J Craniofac Surg. 2025 May 1;36(3):e328-e330. doi: 10.1097/SCS.0000000000010968. Epub 2024 Dec 4.
Variations in the cerebral artery circle are more prevalent than one might expect. This imaging report outlines the variability observed in the anterior circulation of a 47-year-old female patient, analyzed using a computed tomography angiogram. The first segments (A1) of the anterior cerebral arteries (ACAs) on the left and right side emanate from the internal carotid artery. The authors identified 2 anterior communicating arteries (AComAs) standing 1.4 mm apart. The left and right second segments (A2) of the ACAs were typically present, and authors discovered an accessory A2 branching from the second AComA, also referred to as the median artery of the corpus callosum. Consequently, the patient exhibited both accessories ACA and AComA. These morphological variants in the anterior cerebral circulation are particularly significant due to the increased risk of aneurysms in this area.
大脑动脉环的变异比人们预期的更为普遍。本影像报告概述了一名47岁女性患者前循环中观察到的变异情况，该分析使用了计算机断层血管造影。左右大脑前动脉（ACA）的第一段（A1）发自颈内动脉。作者发现两条前交通动脉（AComA）相距1.4毫米。ACA的左右第二段（A2）通常存在，作者还发现一条副A2从第二条AComA分支出来，也被称为胼胝体正中动脉。因此，该患者同时存在副ACA和副AComA。大脑前循环中的这些形态变异尤为重要，因为该区域动脉瘤的风险增加。
