title: Hypoplastic internal carotid artery stenosis with a low-lying carotid bifurcation causing cerebral ischemia.
abstract: Congenital abnormalities of the internal carotid artery (ICA) are infrequent and can be associated with aberrations of the Circle of Willis. A 47-year-old gentleman presented with transient neurological symptoms and cerebral infarction and carotid Doppler showed a stenotic right ICA. Subsequent computed tomographic angiography showed a hypoplastic ICA with a low-lying bifurcation at the C6 level and aplasia of the anterior communicating artery. This patient was commenced on aggressive medical therapy and at 7-month follow-up was symptom-free. This case report highlights the need for a centralized registry with long-term follow-up data in order to identify optimal management.
authors.affiliation: Department of Vascular Surgery, Aberdeen Royal Infirmary, Foresterhill, Aberdeen, Scotland, United Kingdom. alan.g.dawson.04@aberdeen.ac.uk
authors.forename: Alan G
authors.initials: AG
authors.lastname: Dawson
authors.forename: Alasdair
authors.initials: A
authors.lastname: Wilson
authors.forename: Jana
authors.initials: J
authors.lastname: Maskova
authors.forename: Alison D
authors.initials: AD
authors.lastname: Murray
authors.forename: John M
authors.initials: JM
authors.lastname: Reid
authors.forename: Ganesh
authors.initials: G
authors.lastname: Kuhan
mesh_terms: D002545:Brain Ischemia / Q000209:etiology*; D002343:Carotid Artery, Internal / Q000002:abnormalities*; D016893:Carotid Stenosis / Q000150:complications*; D006801:Humans; D008297:Male; D008875:Middle Aged