Nondysplastic Saccular Aneurysm of the Internal Carotid Artery

An unusual case of nondysplastic saccular aneurysm associated with elongation of the extracranial internal carotid artery is reported. The artery was normal except for a punch-hole defect in the media, which distinguished it from true fibromuscular dysplasia. Although neurologic symptoms and treatment were not specific, this case is interesting in that the exact cause of the aneurysm remains unknown.