Endovascular Treatment of Ruptured, Peripheral Cerebral Aneurysms: Parent Artery Occlusion with

Summary: We report two cases of distal cerebral aneu-rysms that were treated by parent artery occlusion with short Guglielmi detachable coils (GDCs). One patient had a presumed mycotic aneurysm of the distal left posterior ce-rebral artery, and the other had a partially clipped aneurysm of the distal right anterior inferior cerebellar artery that had hemorrhaged. Short GDCs allow controlled, accurate occlusion of the parent artery at the aneurysmal neck. Endovascular coil embolization of cerebral an-eurysms with Guglielmi detachable coils (GDCs) is an acceptable alternative to surgery in selected patients (1). Distal, small aneurysms can be diffi-cult to access with endovascular techniques, mak-ing it impossible to place GDCs within them. These aneurysms are often mycotic. Unruptured mycotic aneurysms may be treated with antibiotics alone, but ruptured mycotic aneurysms are usually treated surgically (2). The traditional surgical therapy for a mycotic aneurysm consists of parent artery oc-clusion and aneurysmal resection (2). Therefore, endovascular parent artery occlusion is an accept-able alternative for mycotic aneurysms. We report two cases of distal aneurysms that were treated by parent artery occlusion using short GDCs (Fig 1), which allowed controlled, accurate occlusion of the parent artery at the aneurysmal neck