Traumatic Supraclinoid Internal Carotid Artery Pseudoaneurysm associated with Carotid-Cavernous Fistula and Contralateral Anterior Cerebral Artery Pseudoaneurysm Treated by Surgical Trapping with High-Flow Bypass and A3-A3 Bypass: A Case Report and Literature Review

Traumatic pseudoaneurysms of the supraclinoid internal carotid artery (ICA) are uncommon, particularly associated with carotid-cavernous fistulas (CCF) or multiple traumatic aneurysms. This report describes a patient with a ruptured left ICA dissecting pseudoaneurysm that caused a direct CCF and a right anterior cerebral artery (ACA) pseudoaneurysm. To eliminate the aneurysm and fistula, we followed the universal bypass strategy by performing an ICA trapping with high-flow bypass, followed by an ACA trapping with A3-A3 side-to-side bypass. Herein, we report the first successful surgical trapping and revascularization of supraclinoid ICA pseudoaneurysm associated with a direct carotid-cavernous fistula.