title: Persistent truncus arteriosus communis in a two-year-old steer.
abstract: A two-year-old Hereford-cross steer was presented for routine embalming. Dissection of the heart and great vessels revealed a persistent truncus arteriosus type A2. Despite complete mixing of pulmonary and aortic blood, this animal had survived to adulthood.
mesh_terms: D000818:Animals; D001808:Blood Vessels / Q000473:pathology; D002417:Cattle; D002418:Cattle Diseases / Q000473:pathology*; D006352:Heart Ventricles / Q000473:pathology; D008168:Lung / Q000473:pathology; D008297:Male; D009206:Myocardium / Q000473:pathology; D014339:Truncus Arteriosus, Persistent / Q000473:pathology / Q000662:veterinary*