title: Extraskeletal osteosarcomas in dogs: 14 cases.
abstract: Fourteen dogs (11 females, three males) with extraskeletal osteosarcomas (EsOSAs) were identified. The median age was 11.5 years. The median body weight was 18 kg. The primary sites of the EsOSAs were the spleen (n=6), mammary gland (n=3), lung (n=2), and one each in the skin, axilla, and mesenteric root. The overall median survival time was 74 days. The only factor which was found to be prognostic for survival was the use of chemotherapy (p of 0.02). Cases which did not have chemotherapy were 3.62 times as likely to die a tumor-related death than cases which had chemotherapy.
authors.affiliation: Comparative Oncology Unit, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins 80523, USA.
authors.forename: C A
authors.initials: CA
authors.lastname: Kuntz
authors.forename: W S
authors.initials: WS
authors.lastname: Dernell
authors.forename: B E
authors.initials: BE
authors.lastname: Powers
authors.forename: S
authors.initials: S
authors.lastname: Withrow
mesh_terms: D000818:Animals; D000970:Antineoplastic Agents / Q000627:therapeutic use; D004283:Dog Diseases; D004285:Dogs; D005260:Female; D008175:Lung Neoplasms / Q000175:diagnosis / Q000188:drug therapy / Q000662:veterinary*; D008297:Male; D015674:Mammary Neoplasms, Animal / Q000175:diagnosis* / Q000188:drug therapy; D009362:Neoplasm Metastasis; D012516:Osteosarcoma / Q000175:diagnosis / Q000188:drug therapy / Q000401:mortality / Q000662:veterinary*; D016016:Proportional Hazards Models; D012189:Retrospective Studies; D012878:Skin Neoplasms / Q000175:diagnosis / Q000188:drug therapy / Q000662:veterinary*; D013160:Splenic Neoplasms / Q000175:diagnosis / Q000188:drug therapy / Q000662:veterinary*; D016019:Survival Analysis
chemical_list: D000970:Antineoplastic Agents