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PubMed This is a summary of 27 peer-reviewed journal articles Updated
Orthopedic Oncology

Why See an Oncologist for Multiple Osteochondromas?

At a Glance

An orthopedic oncologist specializes in all bone and cartilage tumors, including benign multiple osteochondromas. They are the most qualified doctors to monitor your bone bumps, perform complex surgeries to relieve pain or nerve pressure, and detect rare but serious changes early.

In this answer

3 sections

01

The Ultimate Experts in Bone and Cartilage

02

Surveillance for Malignant Transformation

03

Safely Navigating Complex Surgeries

Hearing that you are being referred to an “oncologist” is terrifying, especially when you have been told that your multiple osteochondromas are benign (non-cancerous) bone bumps. It is completely normal to feel panicked by this referral. However, an orthopedic oncologist is simply a surgeon who specializes in tumors of the bone and cartilage—both benign and malignant. Because multiple osteochondromas is a complex condition characterized by multiple bone growths, an orthopedic oncologist is the most qualified specialist to manage your care. They are uniquely trained to monitor the structural details of your bumps, perform complex removals if they start pressing on nerves or blood vessels, and keep a watchful eye out for the rare instances when a bump turns into something dangerous. During your first visit, your oncologist will likely establish a “baseline” by taking X-rays or MRIs of your current bumps, giving them a map to compare against in the future.

The Ultimate Experts in Bone and Cartilage

Every osteochondroma has a layer of cartilage on top of it, known as the cartilage cap. The health and thickness of this cap is one of the most important factors in monitoring your condition.

Because cartilage does not show up well on standard X-rays, evaluating it requires advanced imaging like an MRI [1][2]. Orthopedic oncologists are experts at reading these scans and precisely measuring the cartilage cap. In adults, if the cartilage cap grows thicker than 2 centimeters, it acts as an important warning sign that the bump requires closer investigation [3][4][5]. Note that in growing children, the cartilage cap is naturally thicker, so pediatric thresholds for concern are different [1][6].

Surveillance for Malignant Transformation

While the vast majority of osteochondromas remain completely benign for your entire life, people with multiple osteochondromas have a 1% to 10% lifetime risk of a benign bump transforming into a type of bone cancer called secondary chondrosarcoma [7][8][9]. This risk is higher than it is for someone who only has a single isolated osteochondroma [8][10]. You may wonder why this percentage range is so broad; this largely reflects differences across various medical studies and the rarity of the condition, though researchers continue to study whether specific genetic mutations influence individual risk [7][11].

Because of this risk, your care requires a doctor with a high index of suspicion who knows exactly what “red flags” to look for [4][12]. Rather than relying on frequent full-body scans—which are not standard practice—your oncologist will base your monitoring schedule on your specific symptoms and use targeted imaging on high-risk areas [13][14]. They actively monitor you for clinical signs of a changing bump, such as:

  • New or worsening pain in a bump that used to be painless [15][3][16]
  • Any new growth of a bump after you have reached adulthood and stopped growing, or rapid growth during childhood [15][3][16]
  • Pain that wakes you up at night or occurs when you are resting

They do not just wait for a problem to occur; their specialized training ensures that if a bump does start to change, it is caught and investigated as early as possible.

Safely Navigating Complex Surgeries

Even when they are entirely benign, osteochondromas sometimes need to be surgically removed. This is usually because a bump has grown large enough to press against nearby nerves or blood vessels, or because it is physically blocking a joint from moving properly [17][18][19].

When bumps are located in flat bones or tricky anatomical locations—like the pelvis, spine, or deep inside the hip or shoulder joints—surgery becomes highly complex [20][21][22]. Orthopedic oncologists are the surgeons best equipped to handle these high-stakes removals.

They use advanced surgical techniques, sometimes completely removing the bump and its base in one single piece (a technique called en bloc resection) [20][21][22]. This thorough approach cleanly separates the bump from the normal bone surface—without removing large segments of your healthy, native bone—which helps prevent the bump from growing back while safely protecting your critical nerves and blood vessels. Additionally, because multiple osteochondromas can cause bones to bend or grow at different lengths, orthopedic oncologists are skilled at complex reconstructive surgeries, like limb lengthening and bone-straightening procedures, to help you maintain your mobility [23][24][25].

Ultimately, an orthopedic oncologist is a highly specialized, lifelong partner dedicated to preserving your mobility, treating complications, and providing the peace of mind that comes from expert surveillance [26][8][27].

Common questions in this guide

Why do I need to see an oncologist for benign bone bumps?
Orthopedic oncologists specialize in all tumors of the bone and cartilage, not just cancer. They are uniquely trained to monitor complex bone growths, perform safe surgical removals, and detect any rare, dangerous changes early.
What is a cartilage cap and why is it important?
Every osteochondroma has a layer of cartilage on top called the cartilage cap. If this cap grows thicker than 2 centimeters in an adult, it acts as an early warning sign that the bump requires closer medical investigation.
Can multiple osteochondromas turn into cancer?
While the vast majority of bumps remain benign, people with multiple osteochondromas have a 1% to 10% lifetime risk of a bump transforming into secondary chondrosarcoma, a type of bone cancer. Routine monitoring helps catch these rare changes early.
When should I contact my doctor about a changing bump?
You should contact your doctor immediately if you notice new or worsening pain, pain that wakes you up at night, or any new growth or sudden changes in a bump's size or shape after you have reached adulthood.
How is an osteochondroma surgically removed?
Orthopedic oncologists often use a technique called en bloc resection to remove the bump and its base in one piece. This protects nearby nerves, blood vessels, and healthy bone while helping to prevent the bump from growing back.

Questions to Ask Your Doctor

Curated prompts to bring to your next appointment.

  1. 1.Given my specific bumps, which ones do you want to monitor most closely and how often?
  2. 2.Should I be getting baseline MRIs of certain areas like my hips or pelvis to map my current bumps?
  3. 3.What specific 'red flag' symptoms should prompt me to call your office immediately?
  4. 4.If I eventually need a bump removed, how do you plan the surgery to protect my nearby nerves, blood vessels, and healthy bone?

Questions For You

Tap a prompt to share your answer — we'll use it plus this page's context to start a tailored conversation.

Related questions

Why Does MO Cause Bone Deformities & Uneven Leg Length?Can a Child Get Multiple Osteochondromas If Parents Don't?Can Kids with Multiple Osteochondromas Play Sports?Is EXT1 More Severe Than EXT2 in Multiple Osteochondromas?Which Osteochondromas Have the Highest Cancer Risk?How Often Do I Need an MRI for Multiple Osteochondromas?Is There Medication to Shrink Multiple Osteochondromas?How to Manage Multiple Osteochondromas Pain Without SurgerySigns an Osteochondroma is Turning Into Cancer?Are HME and Multiple Osteochondromas the Same?When Is Surgery Needed for Multiple Osteochondromas?

References

References (27)
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This information about orthopedic oncology care is for educational purposes only and does not replace professional medical advice. Always consult your orthopedic oncologist regarding your specific monitoring schedule and any changes in your osteochondromas.

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