title: Primary cardiac fibrosarcoma with pulmonary metastasis in a Labrador Retriever.
abstract: A 6-year-old, neutered male Labrador Retriever was diagnosed with congestive heart failure, and an echocardiogram revealed a large mass inside the pericardial sac associated with the left ventricle. At necropsy, the dog had marked ascites, mild hydrothorax, marked hydropericardium, and an 11.0 x 7.0 x 6.0 cm, tan and red, firm, well-demarcated mass attached to the left ventricular free wall. The mass was diagnosed as a fibrosarcoma based on the morphologic appearance and supportive immunohistochemical staining. To our knowledge, this is the first case report of a primary fibrosarcoma involving the left ventricular free wall myocardium, epicardium, and pericardium with a pulmonary metastasis in a dog.
authors.affiliation: Veterinary Diagnostic Laboratory, University of Minnesota, St. Paul, MN 55108, USA. seco0003@umn.edu
authors.forename: M C
authors.initials: MC
authors.lastname: Speltz
authors.forename: J C
authors.initials: JC
authors.lastname: Manivel
authors.forename: A H
authors.initials: AH
authors.lastname: Tobias
authors.forename: D W
authors.initials: DW
authors.lastname: Hayden
mesh_terms: D000818:Animals; D004283:Dog Diseases / Q000473:pathology*; D004285:Dogs; D005354:Fibrosarcoma / Q000473:pathology / Q000662:veterinary*; D006338:Heart Neoplasms / Q000473:pathology / Q000662:veterinary*; D008175:Lung Neoplasms / Q000556:secondary / Q000662:veterinary*; D008297:Male