Tubular hypoplasia of the aorta and right atrioventricular valve dysplasia in a Bulldog.
A Bulldog puppy that died at 1 day of age was presented for postmortem evaluation. Macroscopically, there was marked hypoplasia of the ascending, transverse, and proximal segments of the descending thoracic aorta and almost complete secondary thrombosis of the left ventricle causing a functional stenosis of the left atrioventricular valve. Separately, there was right atrioventricular valve dysplasia with secondary dilation of the right atrium. Microscopically, the left ventricular outflow tract was occluded by chondroid metaplasia, fibrosing recanalization of a left-ventricular thrombus, and isolated Purkinje fiber degeneration and necrosis.
Robinson
Nicholas A
NA
Department of Veterinary Population Medicine, College of Veterinary Medicine, University of Minnesota, 1333 Gortner Avenue, St. Paul, MN 55108, USA.
Armíen
Aníbal G
AG
D000818:Animals; D001011:Aorta / Q000002:abnormalities*; D001018:Aortic Diseases / Q000473:pathology / Q000662:veterinary*; D004283:Dog Diseases / Q000473:pathology*; D004285:Dogs; D017809:Fatal Outcome; D006330:Heart Defects, Congenital / Q000473:pathology / Q000662:veterinary*; D006349:Heart Valve Diseases / Q000473:pathology / Q000662:veterinary*; D014261:Tricuspid Valve / Q000002:abnormalities*