Bone Lesions

Overview

A bone lesion is an area of bone that looks different from normal bone on an X-ray or scan. The word lesion does not automatically mean cancer. It simply describes a change, and many bone lesions are harmless.

Bone lesions are common on imaging. Many are harmless findings that need only a check-up or follow-up scan.

People of any age can have a bone lesion. Some harmless types are more common in children and teenagers, while other causes are more common in adults, especially people with a history of cancer.

Symptoms

Common symptoms

• No symptoms at all — many are found by chance on a scan done for another reason.
• Dull or aching pain in the bone that may come and go.
• Pain that is worse at night or with activity.
• Swelling or a lump near the bone.
• A bone that breaks more easily than expected after a minor injury.
• Limping or trouble using an arm or leg, depending on where the lesion is.

Symptoms in children

• Leg or arm pain, limping, or swelling.
• A harmless growth-related lesion found after a minor injury.
• Most bone lesions in children are benign, but they should still be checked by a doctor.

Symptoms in older adults

• New bone pain or a lesion found on imaging.
• In older adults, a new bone lesion is checked carefully because some cancers can spread to bone. This does not mean it is cancer, but it is one reason your doctor may arrange tests.
• Arthritis and wear-and-tear changes can also cause areas that look unusual on scans.

Causes

Main causes

• Benign bone growths and cysts — harmless lumps of bone or fluid-filled spaces.
• Injury or healing bone — a healing fracture can look like a lesion on a scan.
• Bone infection.
• Metabolic bone problems or conditions that affect bone growth.
• Cancer that starts in bone (primary bone cancer) — uncommon.
• Cancer that has spread to bone from another part of the body.
• Arthritis or wear-and-tear changes near a joint.

Risk factors

• Age — some benign lesions are more common in children and teenagers; some cancers are more common in older adults.
• A previous cancer diagnosis.
• Radiation treatment to an area of bone.
• Certain rare inherited conditions that affect bone.
• Long-term or severe infection in a bone.
• Weakened bones from poor nutrition or other health conditions.

When to see a doctor

See a doctor urgently if:

• New severe bone pain, especially after an injury.
• Fever with bone pain, swelling, or feeling unwell.
• New weakness, numbness, or bladder or bowel changes with back pain.
• A bone that breaks with little force.

Book a routine appointment if:

• A bone lesion seen on a scan that your doctor wants to check.
• Mild bone pain that lasts more than a few weeks.
• A lump or swelling near a bone.
• Pain that wakes you from sleep or is getting worse.

Diagnosis

Your doctor will ask about your symptoms and medical history, examine you, and usually look at imaging. They may compare old and new scans. Some lesions can be diagnosed from imaging alone; others need blood tests or a biopsy. A biopsy is a small sample of bone or tissue taken for lab testing.

Tests that may be done

• X-ray
• CT scan
• MRI scan
• Blood tests
• Bone scan or PET scan if cancer is suspected
• Biopsy, if needed

What to expect at your appointment

You may be referred to a bone specialist, such as an orthopaedic doctor or cancer specialist. Follow-up scans over time are common. Not every lesion needs a biopsy. Ask what the plan is and when you will get results.

Treatment

Treatment depends on the cause, size, location, and whether the lesion causes symptoms. Many benign lesions are watched with scans. Others may need treatment for infection, pain, or a risk of fracture.

Self-care at home

• Keep a note of your pain, swelling, and what makes it better or worse.
• Follow your doctor's advice about activity and weight bearing.
• Use crutches or supports only if your clinician advises.
• Attend follow-up scans and appointments.
• Eat a bone-healthy diet and ask your doctor if you need vitamin supplements.

Medical treatments

Your care team may use watchful waiting with repeat scans, medicines for pain or infection, physical therapy, or a procedure to remove or stabilise a lesion. If cancer is found, a specialist team will plan treatment, which may include surgery, radiation, or medicines that treat cancer. You will be involved in decisions about your care.

When is surgery considered?

Surgery may be considered if a lesion is likely to weaken the bone, causes ongoing pain, is infected, or is suspected to be cancer. The type of surgery depends on where the lesion is and its cause.

Living with this condition

Most people can continue normal activities, but you may need to adjust exercise or work while tests are done. Ask your doctor what is safe for your bone.

Lifestyle tips

• Stay active in ways your clinician approves to keep muscles and bones strong.
• Avoid falls: keep floors clear, use good lighting, and wear supportive shoes.
• Eat a balanced diet with enough calcium and vitamin D from food or supplements if advised.
• Do not smoke; smoking weakens bones and slows healing.
• Keep a symptom diary and bring it to appointments.

Diet and exercise

A balanced diet and safe weight-bearing exercise help bone health. Ask your doctor or physiotherapist which exercises are safe for you. Avoid high-impact activity if your bone is weakened.

Mental health and emotional wellbeing

Waiting for test results or living with pain can be stressful. It is normal to feel worried. Talk to your doctor about support, and consider speaking with a counsellor or support group. If you ever feel you cannot cope, contact your doctor or local health service right away.

Prevention

Many bone lesions cannot be prevented because they are caused by growths, injury, or genes. You can support bone health and lower some risks by eating well, staying active, avoiding smoking, and preventing falls.

Vaccines

There is no vaccine that prevents bone lesions. Vaccines may still be recommended for your general health.

Screening programmes

There is no routine screening test for bone lesions in the general population. Imaging is done when you have symptoms or when a lesion is found during another test. People with a known cancer may have scans as part of their follow-up.

Complications

If left untreated

• A weakened bone may break with little force.
• Infection in bone can spread and damage bone if not treated.
• A lesion pressing on nerves can cause pain, numbness, or weakness.
• Cancer in bone can grow or spread if not treated.
• Ongoing pain and reduced movement.

Long-term outlook

The outlook is usually good, especially for benign lesions. Many need only monitoring. Even when a lesion is serious, modern treatments can help control it, and your care team will make a plan with you.

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