Cancer of the Bone
Primary bone cancer, which begins in bone, is uncommon but it is not unusual for a malignancy to spread to bone from other parts of the body such as from breast, lung, and prostate. The most common type of primary bone cancer is osteosarcoma, which develops in new tissue in growing bones. Another type of cancer, chondrosarcoma, arises in cartilage. Ewing’s sarcoma, still another form of bone cancer, begins in immature nerve tissue in bone marrow. Osteosarcoma and Ewing’s sarcoma tend to occur in children and adolescents, while chondrosarcoma occurs more often in adults.