Abstract
An 11-year-old castrated male dog of mixed breed was referred to the hospital for treatment of suspected osteosarcoma of the left distal radius(Day 1). Limb amputation was performed on Day 4. A diagnosis of osteosarcoma was made histopathologically. The dog was treated with an adjuvant chemotherapy series with carboplatin. On Day 427, abdominal ultrasonography revealed a mass in the medial right hepatic lobe. A partial liver lobectomy was performed, and the lesion was diagnosed as hyperplastic nodules by histopathology. On Day 849, abdominal ultrasonography revealed a mass surrounding the sublumbar arteriovenous area. A Tru-cut biopsy was performed, and histopathology confirmed the diagnosis of hemangiosarcoma. Complete remission of the osteosarcoma was achieved. The patient enjoyed an excellent quality of life for 956 days until death resulting from hemangiosarcoma.
