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Lung Cancer

Medically reviewed by Last updated on May 6, 2024.

What is lung cancer?

Lung cancer is a type of cancer that starts in the lungs. Lung cancer is the leading cause of cancer deaths worldwide. Cigarette smoking causes most lung cancer, but it can also develop in people who do not smoke.

The Lungs

What are the types of lung cancer?

The main differences between the 2 major types is the cells the cancer starts in and how it grows:

What increases my risk for lung cancer?

What are the signs and symptoms of lung cancer?

How is lung cancer diagnosed?

Your healthcare provider will ask about your symptoms and examine you. You may need any of the following:

How is lung cancer treated?

The most common treatments for lung cancer include the following:

How can I lower my risk for lung cancer?

Call your local emergency number (911 in the US) if:

When should I seek immediate care?

When should I call my doctor or oncologist?

Care Agreement

You have the right to help plan your care. Learn about your health condition and how it may be treated. Discuss treatment options with your healthcare providers to decide what care you want to receive. You always have the right to refuse treatment. The above information is an educational aid only. It is not intended as medical advice for individual conditions or treatments. Talk to your doctor, nurse or pharmacist before following any medical regimen to see if it is safe and effective for you.

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Learn more about Lung Cancer

Treatment options

Care guides

Symptoms and treatments

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.