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Osteosarcoma is the most common type of bone cancer. The average age at diagnosis is 15. Boys and girls have a similar incidence of this tumor until late adolescence, at which time boys are more commonly affected. In rare cases, osteosarcoma occurs in adults. Although osteosarcoma tends to occur in the larger bones, such as the shin (near the knee), thigh (near the knee) and upper arm (near the shoulder), it can occur in any bone. A number of variants of osteosarcoma exist, including conventional types (osteoblastic, chondroblastic, and fibroblastic), telangiectatic, multifocal, parosteal, and periosteal. The cause of osteosarcoma is not known. In some cases, it runs in families, and at least one gene has been linked to increased risk. Treatment varies from person to person and may include surgery, chemotherapy, radiation therapy, and samarium.
Source: GARD Last updated on 05-01-20
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