Ozturk Hakan A, Sanli Emine C, Kurtoglu Zeliha
Department of Anatomy, Faculty of Medicine, Mersin University, Yenisehir Campus, Mersin 33169, Turkey. Tel. +90 (324) 3412815 Ext. 1020. Fax. +90 (324) 3410878. E-mail:
Neurosciences (Riyadh). 2008 Oct;13(4):441-4.
During the cerebral dissection of a 67-year-old male cadaver, a unique combination of variations at the circle of Willis and anterior cerebral artery (ACA) distribution were encountered. The A1 segment of both ACA were fused without an anterior communicating artery (ACoA), forming an X shape and giving rise to a common pericallosal artery (CPA), an incomplete distal ACA, and an incomplete distal anterior cerebral artery (IACA). The IACA had an unusual course, which may be important from the surgical point of view. The CPA continued as the A2 and A3 segments, and bifurcated into 2 pericallosal arteries. Branching patterns of the varied arteries to the interhemispheric region were evaluated, and results were discussed. Additionally, both posterior communicating arteries were hypoplastic. There was no aneurysm formation at the circle of Willis and its branches.
在对一名67岁男性尸体进行脑部分解时，发现了 Willis 环和大脑前动脉（ACA）分布变异的独特组合。双侧 ACA 的 A1 段融合，无前交通动脉（ACoA），形成X形，并发出一条共同的胼周动脉（CPA）、一条不完整的远端 ACA 和一条不完整的远端大脑前动脉（IACA）。IACA 走行异常，从手术角度来看可能具有重要意义。CPA 延续为 A2 和 A3 段，并分叉为2条胼周动脉。评估了不同动脉至半球间区域的分支模式，并对结果进行了讨论。此外，双侧后交通动脉发育不全。Willis 环及其分支未形成动脉瘤。
