Infectious intracavernous carotid artery aneurysms usually present wit
h ophthalmoplegia and/or signs of cavernous sinus thrombosis. We repor
t an unusual case in which a patient with AIDS presented with intracta
ble epistaxis secondary to rupture of a giant infectious intracavernou
s carotid artery aneurysm. Culture of the aneurysm grew mycobacterium
avium intracellulare (MAI). The patient was treated successfully by ex
cision of the aneurysm and reconstruction of the internal carotid arte
ry with a saphenous vein interposition graft.