In our study investigating the morphological characteristics of parent arteries associated with PComA aneurysms, we demonstrated significant associations between the presence of PComA aneurysms and certain morphological features of the parent arteries, particularly ICA-PComA angles, ICA1 and ICA2 diameters, and the presence of ipsilateral P1 and contralateral A1 segment hypoplasia or aplasia. These findings are consistent with existing evidence suggesting that arterial morphological parameters influence local hemodynamics, thereby potentially contributing to aneurysm formation.
Çolakoğlu et al. (2026) studied this question.