Osteosarcoma in adjacent lumbar vertebrae in a dog

Vertebral osteosarcoma is an uncommon neoplasm. Affected dogs typically hav e neurologic signs consistent with spinal cord compression. New sensitive imaging methods may reveal tumor-associated changes not evide nt in routine radiographs, thus enhancing locoregional staging of disease. Metastatic lesions of osteosarcoma in adjacent bones may develop before the re is radiographic evidence of pulmonary metastasis.