title: Persistent right aortic arch in a yearling horse.
abstract: A 14-month-old filly with chronic pharyngitis was diagnosed with incomplete esophageal constriction and megaesophagus due to a persistent right aortic arch. This report is unusual because clinical signs of respiratory dysfunction secondary to chronic regurgitation occurred prior to the recognition of dysphagia.
authors.affiliation: Department of Anesthesiology, Radiology and Surgery, Western College of veterinary Medicine, University of Saskatchewan, Saskatoon.
authors.forename: T D
authors.initials: TD
authors.lastname: Butt
authors.forename: D G
authors.initials: DG
authors.lastname: MacDonald
authors.forename: W H
authors.initials: WH
authors.lastname: Crawford
authors.forename: J E
authors.initials: JE
authors.lastname: Dechant
mesh_terms: D000818:Animals; D001013:Aorta, Thoracic / Q000002:abnormalities*; D002908:Chronic Disease; D003680:Deglutition Disorders / Q000209:etiology / Q000662:veterinary*; D005260:Female; D006734:Horse Diseases / Q000209:etiology*; D006736:Horses / Q000002:abnormalities*; D010612:Pharyngitis / Q000209:etiology / Q000662:veterinary*