LAUSR

Anterior communicating artery (ACoA) aneurysms can orient rostrally into the interhemispheric fissure or caudally into the optic chiasm. The majority of these aneurysms project into the interhemispheric fissure. This patient had an ACoA aneurysm with a multilobulated appearance, and the primary lobe projected into the interhemispheric fissure. The cisterns were opened sharply via an orbitozygomatic approach to permit proximal, distal, and neck control. A permanent clip was applied across the aneurysm neck and on a small contralateral aneurysm. Postoperative imaging confirmed complete aneurysm occlusion. The patient gave informed consent for surgery and video recording. Institutional review board approval was deemed unnecessary. Used with permission from Barrow Neurological Institute, Phoenix, Arizona.