There are 2 main types of bone cancer that develop in children.
Osteosarcoma is the most common type of bone cancer in children. Almost 50% of all childhood bone cancers are osteosarcomas. They occur most often during the second decade of life during the adolescent growth spurt. They most commonly occur at the sites of the most rapid growth in the end (called the metaphysis) of a long bone. This includes the thigh bone (femur) next to the knee, the shin bone (tibia) next to the knee and the upper arm bone (humerus) next to the shoulder.
Ewing sarcoma of the bone is the second most common type of bone cancer in children. It develops in the middle or shaft of the long bones (called the diaphysis) or the bones of the axial skeleton, which includes the pelvis, ribs, spine and skull.
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