Variations of the anterior communicating artery complex and occurrence of anterior communicating XXXX : A2 segment consideration.

@entity1 @entity154 @entity1347 @entity509 @entity439 @entity432 @entity3894 @entity438
INTRODUCTION: The anterior communicating artery (ACoA) is the most frequent site of @entity438 location. Despite many studies the frequency of @entity439 occurrence with @entity154 is still poorly described. Moreover the significance of the A2 segment of anterior cerebral @entity432 has been neglected. The aim of this study was to determine the frequency and types of variations of the anterior cerebral circulation in @entity1 with ACoA @entity439 and to analyze their relation to @entity439 occurrence in the Polish population. MATERIALS AND METHODS: We studied 50 @entity1 with an established radiological diagnosis of ACoA @entity439 and 100 healthy age- and sex-matched controls using Computed Tomgraphy Angio- graphy. Maximum Intensity and Volume Rendering Projections were used to examine the cerebral arterial circulation. Univariate logistic regression was used to determine the statistical association between ACoA complex anomalies and @entity439 occurrence. RESULTS: @entity1 in the study group had a significantly higher incidence of hypoplastic A1 seg- ment of the anterior cerebral artery (24% vs. 7%; p <0.01) and aplastic A1 segment of the anterior cerebral artery (12% vs. 3%; p = 0.03). The frequency of @entity1347 or @entity3894 in the study group was 36%. There was a statistical trend regarding A2 segment @entity3894 / @entity509 as a potential predictor of ACoA @entity439 (6% vs. 1%; p = 0.07). CONCLUSION: Occurrence of an ACoA @entity439 is associated with @entity509 or @entity3894 of the A1 segment of the anterior cerebral artery. @entity1347 may potentially be associated with @entity439 formation.
