Hypoplastic aberrant left subclavian artery in a dog with a persistent right aortic arch
Bryan Bottorff1, D David Sisson
1Department of Clinical Sciences, College of Veterinary Medicine, Oregon State University, Magruder Hall, Corvallis, OR 97331, USA. bryan.bottorff@oregonstate.edu
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.
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