Methods: Angiograms of 106 PCom aneurysms were reviewed.
Results: Fetal Posterior Cerebral Artery was found in 19,8% of the cases; 57,5% of the aneurysms originated in the carotid artery; 78% of the aneurysms were small (less than 10 mm).
Conclusion: Pcom aneurysms most frequently arise from the carotid artery itself. The presence of a fetal posterior cerebral artery is not related to the development of Pcom aneurysms.]]>