title: Hypoplastic aberrant left subclavian artery in a dog with a persistent right aortic arch.
abstract: Vascular ring anomalies (VRA) are relatively uncommon cardiovascular disorders in canine patients. The most common VRA is a persistent right aortic arch (PRAA) with a left ligamentum arteriosum, however various other vascular anomalies resulting in tracheoesophageal compression have also been reported. We report a case of a dog with a PRAA and left ligamentum arteriosum with a hypoplastic aberrant left subclavian artery resulting in asymmetric cervicobrachial circulation. Selective angiography and ECG-gated multi-detector computed tomography were utilized in the evaluation of these defects. The case presented represents a unique vascular anomaly of the aortic arch not previously described in veterinary medicine.
authors.affiliation: Department of Clinical Sciences, College of Veterinary Medicine, Oregon State University, Magruder Hall, Corvallis, OR 97331, USA. bryan.bottorff@oregonstate.edu
authors.forename: Bryan
authors.initials: B
authors.lastname: Bottorff
authors.forename: D David
authors.initials: DD
authors.lastname: Sisson
mesh_terms: D000818:Animals; D001011:Aorta / Q000002:abnormalities*; D004283:Dog Diseases / Q000473:pathology*; D004285:Dogs; D013348:Subclavian Artery / Q000002:abnormalities*