Benign bone tumors are bone tumors that are not cancerous. These tumors may cause pain that gets worse and not better. Some benign bone tumors may need treatment to stop them from destroying bone. Other noncancerous bone tumors may require no treatment at all. These tumors often affect younger people.
Most tumors that start in your bones are benign (not cancer). This means that benign tumors will not spread from their original site to a new location.
Tumors can form in any of the bones of your skeletal system and in any part of the bone. In general, the most common bones involved are also some of the largest: the femur, tibia, humerus, pelvis, spine and ribs.
Some types of tumors are most common in specific locations, such as the spine or near the growth plates in your hip, knee or shoulder.
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Benign bone tumors are most common in people who are under 30 years old. A large portion of benign bone tumors are found in children while their skeletons are still growing.
Many benign tumors actually stop growing once a child reaches skeletal maturity, which is the term used to describe the time at which bones stop growing in length. Skeletal maturity usually happens between the ages of 14 to 16 in girls and between the ages of 16 to 19 in boys.
The most common types of benign bone tumors include:
Bone tumors form when bone cells divide and grow out of control, forming a lump or a mass of cells. We don’t know why this happens in most cases.
Symptoms of benign bone tumors include:
In most cases, these tumors have no symptoms and are incidentally discovered on an X-ray obtained for an injury.
If you’re concerned about a lump or swelling on a bone, first make an appointment with your healthcare provider. They will start with a complete physical examination and are likely to order tests, such as:
It’s rare that your provider will order blood or urine tests to diagnose a benign blood tumor. A bone tumor specialist will likely order a bone scan, CT scan, MRI scan or biopsy. The appropriate first step is an initial evaluation and X-rays. Your pediatrician or primary care provider can order these first tests.
There is no single treatment for benign bone tumors. Treating a benign bone tumor depends on things like the specific type of tumor, its size, its location and the effect has on bone strength.
In many cases, your provider may suggest just watching and waiting (observation). In other cases, your provider may suggest medication, specialized imaging, a biopsy, or removing the tumor surgically.
Most benign tumors respond well to surgical removal. In many cases, the likelihood that the tumor will come back is low — usually less than 5%. Some benign bone tumors, like giant cell tumors of bone, have a higher rate of return, but there are good methods to treat these tumors if they do come back.
Treating benign bone tumors using surgery calls for removing the tumor as well as promoting the growth of new healthy bone at the site of the tumor. The surgeon caring for these tumors should try to remove the tumor with the least amount of trauma to surrounding normal bone tissue.
Surgeons should also have experience with proper stabilization of the bone with orthopedic hardware and bone grafting — as necessary. The combination of these techniques allows people with benign bone tumors, especially young people, to be able to return to full and unlimited activities after treatment.
Other treatments can be used for certain types of bone tumors. One treatment for osteoid osteoma may include radiofrequency ablation or thermal necrosis. These procedures require anesthesia, are often done as a combined approach and involve orthopedic surgeons and radiologists. Aneurysmal bone cysts (ABCs) can be treated with serial (repeated) injections of a medication called doxycycline and have a good chance of resolving without an open surgery.
It’s unusual to have major problems with these surgeries because they are mostly straightforward. However, rare (but possible) risks include nerve injury, infection, bleeding, stiffness and an inability to return to a high level of sport.
As far as researchers know, there’s no way to prevent benign bone tumors from forming.
The outlook for people with benign bone tumors is excellent. Treatment is possible and provides pain relief. The condition is almost never fatal. Benign bone tumors rarely become cancerous (far less than a 1% chance).
You should always feel that you’re able to contact your healthcare provider with any concerns. If you notice a lump or swelling near your bone, or if you have pain that gets worse and not better, call your provider.
A note from Cleveland Clinic
Benign bone tumors, or tumors that are not cancerous, happen more often than malignant bone tumors (cancerous tumors). These tumors often happen in young people. If you or your child have symptoms that include a lump and / or swelling and pain that gets worse even when you’re resting, call your provider. Even though the tumors are benign, you may need treatment. Early diagnosis and treatment is best.
Last reviewed by a Cleveland Clinic medical professional on 07/12/2021.
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