The Condition"...Most bone cancers are called sarcomas, cancers that develop predominantly from bone, cartilage, muscle, fibrous tissue, fatty tissue, or nerve tissue..."

Primary bone cancer is cancer that forms in cells of the bone. Some types of primary bone cancer are osteosarcoma, Ewing's 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).

A malignancy in bone. Primary bone cancer , one that 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. See the entire definition of Bone cancer

The Condition"...Primary bone cancers occur more frequently in children and young adults, particularly in those who have had radiation or chemotherapy treatments for other conditions..."

The Condition"Bone cancer is a malignant growth that can be found in any part of the bone, in any bone of the body..."