Osteosarcoma of the mandible in a cat with long-term survival

A 3-year-old neutered male mixed-breed cat was presented with a mass on the rostral mandible, which was histopathologically diagnosed as a sarcoma. Complete resection with bilateral rostral mandibulectomy was performed, and the postoperative histopathological analysis confirmed the diagnosis of an osteosarcoma. Adjuvant chemotherapy with carboplatin was administered six times. The prognosis was satisfactory, with no recurrence or metastasis after 3 years postoperatively.