title: Complete atrioventricular block secondary to cardiac lymphoma in a dog.
abstract: Third degree atrioventricular (AV) block was observed in a patient with a roughly spherical mass measuring approximately 1 × 1 × 1 cm, visible in the basilar portion of the interventricular septum on 2-dimensional transthoracic echocardiographic examination. The patient had a brief history of lethargy and episodic collapse, and the owner elected to euthanize the dog after the mass lesion was discovered. Necropsy revealed multiple masses within the interventricular septum, ventricular free walls and atrial myocardium. The final diagnosis was large cell (T-cell) lymphosarcoma.
authors.affiliation: North Carolina State University College of Veterinary Medicine, 1052 William Moore Drive, Raleigh, NC 27607, USA. jsterndvm@gmail.com
authors.forename: Joshua A
authors.initials: JA
authors.lastname: Stern
authors.forename: Jeremy R
authors.initials: JR
authors.lastname: Tobias
authors.forename: Bruce W
authors.initials: BW
authors.lastname: Keene
mesh_terms: D000818:Animals; D054537:Atrioventricular Block / Q000209:etiology / Q000662:veterinary*; D004283:Dog Diseases / Q000000981:diagnostic imaging / Q000209:etiology* / Q000473:pathology; D004285:Dogs; D004452:Echocardiography / Q000662:veterinary; D006338:Heart Neoplasms / Q000150:complications / Q000473:pathology / Q000662:veterinary*; D008228:Lymphoma, Non-Hodgkin / Q000150:complications / Q000473:pathology / Q000662:veterinary*; D008297:Male