title: Duplication of the extracranial internal carotid artery.
abstract: We describe a case of duplication of the left internal carotid artery from a point 1 cm distal to the origin to the proximal petrous segment where the vessel reunites. Duplication and fenestration of the internal carotid artery are discussed. A review of embryologic development is presented. Identification of these entities is important, especially in patients who require surgical intervention involving the internal carotid artery.
mesh_terms: D015901:Angiography, Digital Subtraction; D002294:Carcinoma, Squamous Cell / Q000098:blood supply; D002343:Carotid Artery, Internal / Q000000981:diagnostic imaging*; D002533:Cerebral Angiography; D006258:Head and Neck Neoplasms / Q000098:blood supply; D006801:Humans; D008297:Male; D008875:Middle Aged