An aneurysm of the petrous internal carotid artery

Internal carotid artery aneurysms are a rare cause of pulsatile tinnitus an d conductive hearing loss but should be borne in mind when there is a suspe cted diagnosis of glomus jugulare or high-riding jugular bulb. Most cases a re congenital. We present a case of otorrhagia which was initially thought to be a glomus jugulare, the diagnosis of internal carotid artery aneurysm was made at angiography and treated by balloon embolization.