To help find the cause of symptoms, the doctor evaluates a person's medical history, smoking history, exposure to environmental and occupational substances, and family history of cancer. The doctor also performs a physical examination and may order a chest X-ray and other tests

Patient's History

If the doctor suspects lung cancer, they will

Investigate your medical history
Perform a thorough physical examination
Order further specialised medical tests

As part of your medical history, your doctor will ask about:

If you smoke or have smoked previously
Your occupation and place of work.
If you've been exposed to occupational hazardous substances or radiation
Whether you have a family history of lung cancer