 Rupture of the dolichoectatic vessel can lead to catastrophic intracerebral hemorrhage.Internal carotid artery dolichoectasia is particularly interesting because the artery normally already contains one hairpin turn.Seen in an MRI as two individual arteries at this hairpin, a carotid artery dolichoectasia can progress so far as to produce a second hairpin turn and appear as three individual arteries on an MRI.