Definition of bone cancer: Primary bone cancer is cancer that forms in cells of the bone. Some types of primary bone cancer are osteosarcoma, Ewing sarcoma, malignant fibrous histiocytoma, and chondrosarcoma. Secondary bone cancer is cancer that spreads to the bone from another part of the body (such as the prostate, breast, or lung).
Estimated new cases of cancer of the bones and joints in the United States in 2016: 3,300
Osteosarcoma is described as either localized or metastatic.
- Localized osteosarcoma has not spread out of the bone where the cancer started. There may be one or more areas of cancer in the bone that can be removed during surgery.
- Metastatic osteosarcoma has spread from the bone in which the cancer began to other parts of the body. The cancer most often spreads to the lungs. It may also spread to other bones.
All information was taken from the NCI (National Cancer Institute)