title: Gastric leiomyosarcoma in a horse.
abstract: Gastric leiomyosarcoma was diagnosed in a 12-year-old Thoroughbred gelding. The horse was examined because of anorexia, weight loss, and intermittent fever of 1.5 months' duration. Antemortem diagnostic testing was extensive, but a definitive diagnosis could not be reached with noninvasive methods. Exploratory celiotomy confirmed an intra-abdominal mass, and the horse was euthanatized. Necropsy revealed a firm mass associated with the distal portion of the esophagus, cranial two thirds of the stomach, and visceral surface of the liver. The histopathologic diagnosis was leiomyosarcoma.
authors.affiliation: Department of Clinical Studies, New Bolton Center, School of Veterinary Medicine, University of Pennsylvania, Kennett Square 19348.
authors.forename: M G
authors.initials: MG
authors.lastname: Boy
authors.forename: J E
authors.initials: JE
authors.lastname: Palmer
authors.forename: G
authors.initials: G
authors.lastname: Heyer
authors.forename: A N
authors.initials: AN
authors.lastname: Hamir
mesh_terms: D000818:Animals; D000855:Anorexia / Q000209:etiology / Q000662:veterinary; D003937:Diagnosis, Differential; D004938:Esophageal Neoplasms / Q000556:secondary / Q000662:veterinary; D006734:Horse Diseases / Q000175:diagnosis*; D006736:Horses; D007890:Leiomyosarcoma / Q000175:diagnosis / Q000556:secondary / Q000662:veterinary*; D008113:Liver Neoplasms / Q000556:secondary / Q000662:veterinary; D008297:Male; D013274:Stomach Neoplasms / Q000175:diagnosis / Q000662:veterinary*; D015431:Weight Loss