Bone sarcomas start in the bones. They are usually most commonly diagnosed in childhood. Osteosarcoma, the most common type of primary bone cancer, usually occurs in the thigh, upper arm or shin.
Osteosarcoma develops in the osteoblast cells, cells incharge of bone formation. It happens most often in children, adolescents, and young adults. It happens slightly more often in males than in females. Osteosarcoma most commonly happens in the long bones around the knee. Other sites for osteosarcoma include the upper leg, or thighbone, the lower leg, upper arm bone, or any bone in the body, including those in the pelvis, shoulder, and skull.
Other types of bone tumors include:
- Ewing sarcoma
- Giant cell tumor of bone
- Paget’s disease/pagetoid osteosarcoma
- Small cell osteosarcoma