Anatomia angiografica de los aneurismas carotidocomunicantes posteriores / Angiographic anatomy of the posterior communicating artery aneurysms

Objective: to study the anatomical features of posterior communicating artery aneurysms in relation to the anatomical variants of the paren vessels. Methods:Angiograms of 106 PCom aneurysms were reviewed. Results: Fetal Posterior Cerebral Artery was found in 19,8 por ciento of the cases; 57,5 por ciento of the aneurysms originated in the carotid artery; 78 por ciento of the aneurysms were smalls (less than 10mm). Conclusion: Pcom aneurysms most frecuently arise from the carotid artery itself. The presence of a fetal posterior cerebral artery is not related to the development of Pcom aneurysms