14799 Pulmonary Nodules

Overview

A pulmonary nodule (sometimes called a lung spot or coin lesion) is a small, round or oval growth in your lung. It shows up as a 'spot' on an imaging scan. Most pulmonary nodules are harmless and are not cancer.

Yes, pulmonary nodules are common. With the increasing use of CT scans for many reasons, more nodules are being detected. The vast majority are benign.

Pulmonary nodules can affect anyone, but they are more likely to be found in adults over 50, people who have ever smoked, and people with a history of lung infections. Many are harmless, but in some cases they can be an early sign of lung cancer.

Symptoms

Common symptoms

• Most pulmonary nodules cause no symptoms at all — that is why they are usually found by accident when you have a scan for something else.
• If a nodule is large, presses on your airway, or is linked to another condition, you might notice a cough, mild chest discomfort, or shortness of breath. These symptoms are not specific and can be caused by many other lung conditions.

Symptoms in children

• In children, pulmonary nodules are rare and are almost always related to an infection, such as a chest infection or tuberculosis. They usually do not cause symptoms and often shrink over time.
• If a child has a persistent cough, unexplained fever, or trouble breathing, these symptoms should be evaluated by a doctor.

Symptoms in older adults

• In older adults, nodules may be more concerning, especially if there is a history of smoking. Symptoms might include a lingering cough, coughing up blood, unexplained weight loss, or hoarseness.
• However, many older adults have no symptoms, and the nodule is found incidentally on a scan.

Causes

Main causes

• Past lung infections, such as pneumonia, tuberculosis, or fungal infections, which can leave behind scar tissue or small collections of cells.
• Benign growths, like a hamartoma (a non-cancerous collection of tissue).
• Inflammation in the lung for other reasons, such as sarcoidosis or rheumatoid arthritis affecting the lungs.
• Less commonly, a nodule can be the first sign of lung cancer or a cancer that has spread to the lung from elsewhere.

Risk factors

• Smoking or a history of smoking
• Exposure to radon gas
• Exposure to asbestos, silica, or other lung irritants
• Family history of lung cancer
• Age over 50
• A past history of cancer elsewhere in the body

When to see a doctor

See a doctor urgently if:

• If you already know you have a pulmonary nodule and you develop symptoms like coughing up blood, sudden or worsening chest pain, or difficulty breathing.
• If you have a new, unexplained cough that lasts more than three weeks, or you are coughing up any blood.

Book a routine appointment if:

• If you have been told you have a pulmonary nodule and you have not received a follow-up plan, call your general practice and ask for an appointment to discuss the next steps.
• If you have concerns about your risk factors, want to stop smoking, or want to learn more about your scan results, make a routine appointment.

Diagnosis

A pulmonary nodule is most often found on a computed tomography (CT) scan of your chest. It can also be found on a chest X-ray, although CT scans show much more detail. Once a nodule is seen, the next step depends on your overall health, the size of the nodule, and how it looks.

Tests that may be done

• CT scan of the chest — a detailed scan that gives your doctor more information about the nodule's size, shape, and density.
• Positron emission tomography (PET) scan — a scan that shows how active the nodule is; active areas may be more concerning.
• A series of repeat CT scans — done over time to see whether the nodule grows or changes.
• Bronchoscopy — a thin, flexible tube with a camera passed through your airways to look at the nodule and sometimes take a sample.
• Biopsy — a procedure to remove a small piece of the nodule for examination under a microscope.

What to expect at your appointment

Your doctor will explain the findings in plain language and recommend a next step. Often that means 'watchful waiting' — having another CT scan in 3 to 12 months to see if the nodule is stable or growing. If the nodule looks suspicious or grows, you may be referred to a lung specialist (pulmonologist) or a surgeon for more tests. The majority of nodules stay the same and require no treatment.

Treatment

Treatment depends entirely on what the nodule is. If it is benign and stable, you may not need any treatment. If it is caused by an infection, treating the infection may clear it. If there is any concern that it could be cancer, your healthcare team will discuss options with you. The word 'nodule' does not mean cancer — many are harmless.

Self-care at home

• If you smoke, take steps to quit — talk to your doctor or pharmacist about support.
• Try to avoid second-hand smoke and other lung irritants, such as dust and fumes.
• Keep a healthy, balanced diet and stay as active as your health allows.
• Attend every follow-up scan or appointment that is scheduled for you.

Medical treatments

If your nodule is caused by a bacterial infection, you may be prescribed a course of antibiotics. If an inflammatory condition is responsible, your doctor may recommend medication to control inflammation. If the nodule is thought to be cancer, treatment may involve surgery, radiation therapy, chemotherapy, or other targeted therapies — all of which are planned by a specialist team. You will always be given clear information and time to make decisions.

When is surgery considered?

If a nodule is growing, looks suspicious, or is confirmed to be cancer, surgery to remove it may be recommended. The goal of surgery is to remove the nodule completely, often before it has spread. In many cases, removing a small nodule can be a cure. Your surgeon will explain exactly what the operation involves and what recovery looks like.

Living with this condition

For most people, a pulmonary nodule does not affect daily life. You may simply need to have follow-up scans at intervals. Between scans, there is no need to change your everyday activities. Keep the lines of communication open with your healthcare team.

Lifestyle tips

• Stop smoking or never start — this is the single most helpful thing for your lungs.
• Avoid exposure to second-hand smoke.
• If you are concerned about radon in your home, you can ask about testing from your local authority or a licensed professional.
• Get recommended vaccines, including flu and pneumonia vaccines, to help prevent lung infections.

Diet and exercise

Eating a varied diet rich in fruits, vegetables, and whole grains supports your overall health, which helps your body recover from any illness. Regular physical activity — such as walking, swimming, or biking — can improve lung function and reduce stress. Always check with your doctor before starting a new exercise routine, especially if you have other conditions.

Mental health and emotional wellbeing

It is completely normal to feel anxious or worried when a scan finds a 'spot' on your lung. Many people feel this way. Remember that the term 'nodule' is not a diagnosis — most are harmless and need no treatment. Talk to your doctor about your concerns, ask questions, and bring someone you trust to appointments if that helps. If worry is affecting your sleep or daily life, tell your healthcare team; they can point you to support such as counselling.

Prevention

You cannot always prevent a pulmonary nodule, because they are often related to past infections or other conditions. However, avoiding smoking and reducing exposure to harmful particles can lower the chance that a nodule becomes cancer. If you have a nodule, the most important 'prevention' is regular monitoring, so that any change is caught early.

Vaccines

Keeping up to date with recommended vaccines — such as for flu and pneumonia — can help prevent infections that might cause lung scarring or inflammation. Ask your doctor or pharmacist which vaccines are right for you.

Screening programmes

In some countries, adults at high risk for lung cancer (for example, people with a heavy smoking history) may be offered lung cancer screening with a low-dose CT scan. This can find nodules at an early stage and allow early treatment if needed. Ask your doctor if lung screening is available and recommended for you.

Complications

If left untreated

• If a benign nodule is left alone, it usually stays the same and needs no treatment — no harm is done.
• If a nodule is an early cancer and is not monitored or treated, it could grow and spread over time, making treatment harder and reducing the chance of a good outcome.
• Rarely, an infected nodule could cause repeated lung infections or other local problems.

Long-term outlook

The outlook for pulmonary nodules is generally very good. Most are benign and never cause any problems. Even when a nodule is cancer, it is often found at an early and curable stage. With regular follow-up and the right care, many people continue to live full and healthy lives. Stay positive, follow your doctor's plan, and ask for support when you need it.

Find support

External links open third-party websites. Ruqelo Health is not responsible for external content. Listing an organisation does not imply endorsement.