Children's Hospital Colorado
Orthopedic Tumor Program

Bone Tumors in Children

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What are the types of bone tumors?

If you suspect your child has a bone tumor, or your primary care doctor refers you to the Orthopedic Tumor Program at Children's Hospital Colorado, our first step is to determine if the tumor is benign (a non-cancerous bone tumor that does not spread) or malignant (cancerous).

Malignant bone tumors and bone cancer

Among young patients, the two most common types of bone cancer are:

  • Osteosarcoma: Most commonly found in the bones around the knee.
  • Ewing's sarcoma: More common in the upper leg, pelvis and other bones of the trunk.

Both osteosarcoma and Ewing's sarcoma usually begin during the young teenage years. Learn more about how we treat osteosarcoma and Ewing's sarcoma.

Benign bone tumors

Benign (non-cancerous) bone tumors are commonly found on X-rays when a child is being examined for another reason. Symptoms of a benign bone tumor include a slow growing bump, pain or may be found when your child has a fracture through a bone weakened by a bone cyst. In some families, there may be a history of benign bone tumors.

Next steps

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Get to know our pediatric experts.

Allana Lenz, PA-C

Allana Lenz, PA-C

Physician Assistant

Alison Colbert, PhD

Alison Colbert, PhD


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Mark Erickson, MD

Mark Erickson, MD

Orthopaedic Surgery

Julie Wilson, MD

Julie Wilson, MD

Pediatrics, Sports Medicine