title: Vascular hamartoma in the right ventricle of a dog: Diagnosis and treatment.
abstract: A 6-month old Labrador retriever was presented with an acute history of collapse during exercise. A grade III/VI left basilar systolic murmur and thoracic radiographs showing severe right heart enlargement with an enlarged main pulmonary artery were most consistent with a clinical diagnosis of pulmonic stenosis. Echocardiography revealed an intracardiac mass partially obstructing the right ventricular outflow tract. The mass was surgically excised, and histopathology diagnosed a benign vascular hamartoma of the right ventricle. Short-term follow-up showed resolution of clinical signs with no evidence of local recurrence. Intracardiac masses should be considered a differential diagnosis for patients with acute-onset syncope.
authors.affiliation: Department of Medical Sciences, School of Veterinary Medicine, University of Wisconsin, 2015 Linden Dr., Madison, WI 53706, USA.
authors.forename: Sonja S
authors.initials: SS
authors.lastname: Tjostheim
authors.affiliation: Department of Medical Sciences, School of Veterinary Medicine, University of Wisconsin, 2015 Linden Dr., Madison, WI 53706, USA. Electronic address: kellihanh@vetmed.wisc.edu.
authors.forename: Heidi B
authors.initials: HB
authors.lastname: Kellihan
authors.affiliation: Department of Surgical Sciences, School of Veterinary Medicine, University of Wisconsin, 2015 Linden Dr., Madison, WI 53706, USA.
authors.forename: Rebecca A
authors.initials: RA
authors.lastname: Csomos
authors.affiliation: Department of Surgical Sciences, School of Veterinary Medicine, University of Wisconsin, 2015 Linden Dr., Madison, WI 53706, USA.
authors.forename: Jonathan
authors.initials: J
authors.lastname: McAnulty
authors.affiliation: Department of Pathobiological Sciences, School of Veterinary Medicine, University of Wisconsin, 2015 Linden Dr., Madison, WI 53706, USA.
authors.forename: Howard
authors.initials: H
authors.lastname: Steinberg
mesh_terms: D000818:Animals; D003937:Diagnosis, Differential; D004283:Dog Diseases / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000601:surgery; D004285:Dogs; D005260:Female; D006222:Hamartoma / Q000150:complications / Q000175:diagnosis / Q000662:veterinary*; D011651:Pulmonary Artery; D011666:Pulmonary Valve Stenosis / Q000209:etiology / Q000662:veterinary*; D011859:Radiography; D014463:Ultrasonography; D019043:Vascular Neoplasms / Q000150:complications / Q000175:diagnosis / Q000662:veterinary*
keywords: Intracardiac mass; Pulmonic stenosis; Pulmonic valve cyst; Right heart enlargement; Syncope