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Health condition

Ollier disease

Ollier disease is a rare non-inherited condition in which multiple cartilage tumours (enchondromas) develop inside bones, usually asymmetrically and often mainly on one side of the body; lifelong specialist surveillance matters because individual lesions carry a meaningful risk of malignant change.

Why trust this guide

  • 01

    Editorial team

    Written by our editorial team from the UK sources listed on each page.

  • 02

    Sourced from guidance

    Checked against current NHS and UK specialist society guidance at the time of review.

  • 03

    Current for 2026

    Reviewed on 2026-09-27 with the next review scheduled for 2027-09-27.

Key facts

The essentials at a glance.

The symptoms to recognise, when to seek help, which specialist to see, and what treatment usually involves.

  • Multiple enchondromas - benign cartilage tumours within bone - typically affecting hands, feet and long bones, causing swellings, deformity, limb-length difference and sometimes fractures through weakened bone

  • Caused by mosaic (post-zygotic) IDH1/IDH2 mutations - it arises during development and is not passed to children

  • The lifetime risk of an enchondroma transforming into chondrosarcoma is substantial (commonly quoted at 20-30% or higher), so new pain or growth in a known lesion is a red flag

  • Care belongs with a specialist bone tumour service: baseline whole-body imaging, planned surveillance, fracture and deformity surgery, and prompt investigation of any changing lesion

Understanding the condition

What it is and what happens next.

What causes it, how it is diagnosed, and the treatment routes available in the UK.

What it is and how it feels

In Ollier disease, islands of growth-plate cartilage persist inside bones and continue to grow where they should have been replaced: fingers become knobbly and fragile, long bones may bow or end up short, and childhood is often punctuated by fractures through the thinned cortex over lesions. Because the mutation is mosaic, severity ranges enormously - from a few hand lesions found by chance to extensive skeletal involvement - and the related Maffucci syndrome adds soft-tissue haemangiomas.

Diagnosis and treatment routes

Adults with Ollier disease need a surveillance relationship rather than reactive care: a bone tumour centre establishes baseline imaging of affected bones, teaches the warning signs (new or night pain, enlargement, cortical change on imaging), and investigates change promptly with MRI and, where needed, biopsy at the specialist unit - never at a general hospital, since chondrosarcoma surgery is compromised by an ill-planned first operation. Orthopaedic correction of deformity and limb-length issues, and hand surgery for function, are woven around the surveillance backbone. In much of the UK, a routine NHS referral to the relevant specialist clinic can take several months, whereas an initial appointment with a private consultant is typically available within around two weeks.

Seeing a specialist

Who to see, and how quickly you can be seen.

The specialist for this condition is usually a specialist bone tumour unit (sarcoma centre). Your GP can refer you on the NHS, or you can arrange a private consultation directly.

A quiet reminder

This guide is for information, not medical advice.

Your GP knows your history and can tell you which parts apply to you. If in doubt, see them - and seek urgent care for any of the emergency symptoms described above.

Frequently asked

Common questions about Ollier disease.

Quick, plain-English answers to what people ask us most.

  • What is Ollier disease?

    Ollier disease is a recognised medical condition that affects the body in ways specific to its underlying cause. Getting an accurate diagnosis is the first step towards understanding your options and what to expect.

  • What causes Ollier disease?

    The underlying cause can involve a mix of genetic, environmental, and lifestyle factors, and in some cases no single clear cause is identified. Your doctor can help clarify which factors are most relevant to your case based on your history and any test results.

  • What are the symptoms of ollier disease?

    Symptoms can vary from mild to significant and often develop gradually, though some people notice a more sudden onset. Because symptoms overlap with other conditions, a proper clinical assessment is important for an accurate diagnosis.

  • Is ollier disease serious or dangerous?

    Most cases are manageable with appropriate treatment, though severity varies from person to person. Left unaddressed, some cases can lead to complications, so getting an assessment rather than waiting is generally the safer approach.

  • Is ollier disease hereditary or genetic?

    Some cases have a genetic component that runs in families, while others develop without any inherited link, arising instead from environmental or lifestyle factors. If you have a strong family history, mentioning this to your doctor can help guide whether genetic assessment is worthwhile.

  • How is ollier disease treated?

    Treatment approaches vary depending on severity and individual circumstances, and may include lifestyle changes, medication, or referral to a specialist for more targeted therapy. Your GP or specialist will tailor a plan based on your specific situation.

  • How long does ollier disease last?

    Duration varies — some cases are short-lived and resolve fully with treatment, while others are longer-term or chronic conditions managed over time. Your doctor can give you a more specific expectation once they understand your individual case.

  • When is surgery or specialist treatment needed?

    Specialist or surgical treatment is usually considered when simpler treatments haven't controlled symptoms adequately, or when the condition is affecting quality of life or function significantly. A specialist assessment can clarify whether this applies to your situation.

  • When should I see a doctor about ollier disease?

    See a doctor if symptoms are new, worsening, or affecting your daily life. On the NHS, routine referrals to a specialist can take 20 to 45 weeks or longer depending on your area; with private healthcare you can typically see a consultant within about 2 weeks, which can be worthwhile if you want a faster diagnosis or reassurance.

  • Can lifestyle changes help manage ollier disease?

    Alongside medical treatment, factors such as a balanced diet, regular appropriate exercise, stopping smoking, and managing stress can support recovery and reduce the risk of the condition worsening or recurring. Your healthcare team can advise which lifestyle changes are most relevant to your specific condition.