Pacheco MM, Durán MME, Cuba YOL, Serrano GL, Rosales AY, Loret MNJ

Language: Spanish
References: 0
Page: 764-774
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ABSTRACT

Background: the brain is an organ that requires an uninterrupted supply of blood that is guaranteed by the circle of Willis. Objective: to describe the common pattern and anatomical variants of the anterior portion of the circle of Willis. Methods: a cross-sectional descriptive study was conducted in the department of Morphological Sciences at the University of Medical Sciences in Camagüey from December 2014 until May 2016. The universe was composed of 50 brains, which were washed with common water, and fixed in a 10 % formalin solution. Then a macroscopic dissection was performed. The variables studied were: origin, number, path and external diameter. Data were processed using the SPSS statistical package for Windows version 21.0, and descriptive statistics were applied. The results were presented in tables and images. Results: the origin of the precommunicating segment of the anterior cerebral artery from the internal carotid artery, forward and inward to the interhemispheric fissure, and join at the one on both sides in front of the optic nerve through the anterior communicating artery, with variation in the path and in the external diameter, without numerical variants: the anterior communicating artery with variations in the path, number and external diameter. Conclusions: the common pattern and anatomical variants of the anterior portion of the arterial circle of the brain were presented in equal proportion. The most observed anatomical variant was the duplication of the anterior communicating artery.