title: Pulmonary edema secondary to a cardiac schwannoma in a dog.
abstract: A 4-year-old castrated labrador retriever presented for cardiac evaluation to determine the etiology of cardiogenic pulmonary edema diagnosed 1 month prior. A large pedunculated mass involving the ventral aspect of the mural mitral valve leaflet and the endocardial surface of the left ventricular free wall, resulting in severe mitral regurgitation, was identified on echocardiogram. Histopathology and immunohistochemistry of this mass and other endocardial masses identified at necropsy for S-100 protein were consistent with a diagnosis of schwannoma. To the authors' knowledge, this is the first case of a benign intracardiac schwannoma described in the left heart of a dog.
authors.affiliation: Department of Small Animal Medicine and Surgery, College of Veterinary Medicine, University of Georgia, 501 DW Brooks Drive, Athens, GA 30602, USA. Electronic address: jthomason11@vet.k-state.edu.
authors.forename: Justin D
authors.initials: JD
authors.lastname: Thomason
authors.affiliation: Department of Small Animal Medicine and Surgery, College of Veterinary Medicine, University of Georgia, 501 DW Brooks Drive, Athens, GA 30602, USA.
authors.forename: Gregg
authors.initials: G
authors.lastname: Rapoport
authors.affiliation: Department of Small Animal Medicine and Surgery, College of Veterinary Medicine, University of Georgia, 501 DW Brooks Drive, Athens, GA 30602, USA.
authors.forename: Tiffany
authors.initials: T
authors.lastname: Fallaw
authors.affiliation: Department of Small Animal Medicine and Surgery, College of Veterinary Medicine, University of Georgia, 501 DW Brooks Drive, Athens, GA 30602, USA.
authors.forename: Clay A
authors.initials: CA
authors.lastname: Calvert
authors.affiliation: Department of Pathology, College of Veterinary Medicine, University of Georgia, 501 DW Brooks Drive, Athens, GA 30602, USA.
authors.forename: Kaori
authors.initials: K
authors.lastname: Sakamoto
mesh_terms: D000818:Animals; D003937:Diagnosis, Differential; D004283:Dog Diseases / Q000175:diagnosis* / Q000000981:diagnostic imaging; D004285:Dogs; D004452:Echocardiography / Q000662:veterinary; D017809:Fatal Outcome; D006338:Heart Neoplasms / Q000150:complications / Q000175:diagnosis / Q000662:veterinary*; D008297:Male; D008944:Mitral Valve Insufficiency / Q000150:complications / Q000175:diagnosis / Q000662:veterinary*; D009442:Neurilemmoma / Q000150:complications / Q000175:diagnosis / Q000662:veterinary*; D011654:Pulmonary Edema / Q000209:etiology / Q000662:veterinary*
keywords: Congestive heart failure; Intracardiac mass; Mitral regurgitation