Posterior Communicating Artery Aneurysm
Last Updated: September 28, 2018
Aneurysms of the posterior wall of the internal carotid artery (ICA,) originating from the anterior choroidal artery (AChA) and posterior communicating artery (PCoA,) are the most common intracranial aneurysms (up to 35% of all aneurysms.)
PCoA aneurysms represent roughly one-quarter of all ruptured aneurysms. In addition to subarachnoid hemorrhage, patients with PCoA aneurysms commonly present with mass effect on the oculomotor nerve or, less commonly, with em...