Osteochondroma is the most common type of benign (non-cancerous) bone tumor in children. There are often no symptoms, so your child may only discover the osteochondroma when they notice a bump or pain.

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What are the signs and symptoms of osteochondroma?

  • Hard, painless mass
  • Differing limb lengths
  • Growth disturbances (i.e., below average height)
  • Joint and muscle pain
  • Muscle weakness caused by nerve compression

Please note that pain can occur if the mass becomes inflamed. This happens when nearby muscles or tissues make contact with the osteochondroma.

What causes osteochondroma?

The cause of osteochondroma is currently unknown. A study is testing the theory that genetic abnormalities may be the cause.

How is osteochondroma diagnosed?

In most cases, doctors can diagnose an osteochondroma using x-rays.

How is osteochondroma treated?

In most cases, treatment is not needed following a diagnosis.

However, your child may need surgery if the mass causes pain, restricts movement or affects growth. Doctors at Connecticut Children’s can determine the right plan if your child requires treatment for an osteochondroma.