title: A vascular ring variant: an unusual case of vocal cord palsy due to an anomalous left carotid artery arising from a retrotracheal arch of the aorta.
abstract: We present the case of an unusual vascular ring in a 23-year-old male patient who presented for CT examination of the chest for diagnostic work up for unilateral vocal cord palsy. Contrast-enhanced CT revealed the left common carotid artery to be arising from the ascending part of a retrotracheal arch of aorta and traversing anterior to the trachea in the retromanubrial space.
authors.affiliation: Department of Radiology, Lokmanya Tilak Medical College and Municipal General Hospital, Mumbai, India.
authors.forename: A R
authors.initials: AR
authors.lastname: Joshi
authors.forename: A
authors.initials: A
authors.lastname: Garg
authors.forename: B
authors.initials: B
authors.lastname: Vhanmane
authors.forename: S
authors.initials: S
authors.lastname: Merchant
authors.forename: N
authors.initials: N
authors.lastname: Nerurkar
mesh_terms: D000328:Adult; D001015:Aortic Arch Syndromes / Q000150:complications* / Q000000981:diagnostic imaging; D017536:Carotid Artery, Common / Q000002:abnormalities*; D006801:Humans; D008297:Male; D014057:Tomography, X-Ray Computed; D014826:Vocal Cord Paralysis / Q000000981:diagnostic imaging / Q000209:etiology*