title: Missed total occlusion due to the occipital artery arising from the internal carotid artery.
abstract: A 56-year-old man was referred for digital subtraction angiography (DSA) with an ultrasound diagnosis of right proximal internal carotid artery (ICA) stenosis for possible carotid artery stenting. DSA revealed total occlusion of the ICA and an occipital artery arising from the stump and simulating continuation of the ICA. An ascending pharyngeal artery also arose from the same occipital artery. This case is of interest because this is a rare variation besides being a cause of misdiagnosis at carotid ultrasound.
authors.affiliation: Department of Radiology, Bayindir Hospital, 06520, Sogutozu, Ankara, Turkey. bustunsoz2000@yahoo.com
authors.forename: Bahri
authors.initials: B
authors.lastname: Ustunsoz
authors.forename: Burcak
authors.initials: B
authors.lastname: Gumus
authors.forename: Ali
authors.initials: A
authors.lastname: Koksal
authors.forename: Mert
authors.initials: M
authors.lastname: Koroglu
authors.forename: Okan
authors.initials: O
authors.lastname: Akhan
mesh_terms: D015901:Angiography, Digital Subtraction / Q000379:methods; D001157:Arterial Occlusive Diseases / Q000175:diagnosis*; D002343:Carotid Artery, Internal / Q000002:abnormalities / Q000000981:diagnostic imaging*; D016893:Carotid Stenosis / Q000175:diagnosis*; D003937:Diagnosis, Differential; D003951:Diagnostic Errors; D006801:Humans; D008297:Male; D008875:Middle Aged; D018615:Ultrasonography, Doppler, Color / Q000379:methods