Abstract
An 85-year-old woman had been suffering from left oculomotor palsy for 5 years and developed left facial palsy 6 months previous to presenting. She was diagnosed with a giant aneurysm of the left internal carotid artery in the cavernous portion extending into the middle cranial fossa. The left internal carotid artery was sacrificed by endovascular technique following balloon occlusion test. The internal carotid artery giant aneurysm became larger 2 years after endovascular occlusion. In the second operation, the distal internal carotid artery and the ophthalmic artery were occluded by clipping and then the giant aneurysm was decompressed by opening the aneurysm wall and removing a clot.
Our results suggest that giant aneurysms located near the collateral feeding vessel following proximal parent vessel occlusion should be trapped by clipping.
