Osteosarcoma is the most common malignant (cancerous) bone tumor among children, adolescents and young adults, but it is still a rare disorder. This bone cancer affects approximately 400 children younger than age 20 every year in the United States.

Key points about osteosarcoma in children. Osteosarcoma is cancer of the bone. It’s rare, but it is the most common type of bone cancer children and teens. Symptoms can include bone pain, swelling, or a lump (mass). The cancer may show up on an X-ray or on other imaging tests. It is diagnosed with a biopsy.

Osteosarcoma usually appears in children and young adults after age 10. It is the third most common cancer in teens. It is rare in children under age 5. Osteosarcoma occurs slightly more often in males than females. African-American children have a higher risk of developing osteosarcoma than Caucasian children.

Osteosarcoma is cancer of the bone. It’s rare, but it's the most common type of bone cancer children and teens. Symptoms can include bone pain, swelling, or a lump (mass). The cancer may show up on an X-ray or on other imaging tests. It's diagnosed with a biopsy.

Osteosarcoma is very rare, but it's the most common kind of bone cancer in children and teens. It's most common in teens and young adults. Osteosarcoma is cancer that starts in the bone. The cancer (malignant) cells look like immature bone cells. The bone they form is not strong.

Osteosarcoma is the most common type of bone cancer among children, adolescents, and young adults. It usually begins in the marrow cavity of the long bones, such as the arms and legs. It also can occur in the pelvis and spine, and in rare cases, in the jaw or other locations in the body.

Osteosarcoma is the most common type of bone cancer among children, adolescents, and young adults. It usually occurs in the long bones of the arms or legs, but it can also happen in the pelvis and spine or, in rare cases, the jaw or other locations in the body.

Osteosarcoma is the most common form of bone cancer in children. The tumor usually starts in the faster growing ends of the long bones in the arms and legs. Common places where the tumor is found are the lower end of the thigh bone, the upper end of the shin bone, and the upper end of the long bone of the upper arm.

Osteosarcoma (OS), the most common type of primary malignant bone tumor, is defined by the presence of malignant mesenchymal cells producing osteoid or immature bone. The peak incidence of the most frequent type of OS, i.e., high-grade central OS, occurs in the second decade of life during the adolescent growth spurt.

Also called osteogenic sarcoma, osteosarcoma is one of the most common types of bone cancer in children. The disease usually occurs in the long bones, such as the arms (humerus), legs (femur/tibia) and pelvis. It rarely occurs in the jaw and fingers, but often occurs at the ends of these bones near growth plates.