Aneurysms of the Internal Carotid Artery in the Carotid Canal of the Petrous Temporal Bone

Abstract

Aneurysms of the internal carotid artery in the carotid canal of the petrous temporal bone are relatively uncommon lesions. Those arising in the lateral portion of the carotid canal often present with the signs and symptoms of a glomus tumor. A review of the literature indicates that several such aneurysms have been biopsied prior to the correct arteriographic diagnosis. Carotid arteriography is strongly advised in patients in whom the tympanic membrane is deformed by a pulsatile mass.