Condrossarcoma mixóide em um coelho Myxoid chondrosarcoma in a rabbit

Primary bone tumors are rare in animals, with the exception of osteosarcomas. Chondrosarcoma is a malignant, slow-growing cartilage-forming tumor. It is a potentially recurring and locally invasive neoplasm, though metastasis rates are low. Definitive diagnosis comprises histopathological examination. Surgical excision, observing the principles of oncologic surgery, is indicated as the treatment of choice. An approximately 3-year-old, 4.3-kg mixed-breed non-castrated male rabbit was referred to the Hospital de Clinicas Veterinarias, Universidade Federal do Rio Grande do Sul (UFRGS), presenting claudication and an enlarged growth in the right distal pelvic limb. The growth was diagnosed as myxoid chondrosarcoma grade II by histopathological examination. The affected limb was amputated. The patient showed a good recovery of movements over the first days following surgery, and was able to resume previous activities such as walking, running and leaping.