You usually start by seeing your GP. They will ask you about your general health and symptoms and will also examine you. This might include listening to your breathing and seeing how much air you breathe in and out. Your doctor will then decide whether to do tests or refer you to a specialist.
Find out what happens when you see your GP and read about how to get the most out of your appointment.
Find out when GPs refer people for an urgent chest x-ray or to see a lung cancer specialist.
There is no national screening programme for lung cancer in the UK. Find out why this is and about research into this subject.
Find out about the tests used to diagnose lung cancer.
The stage of a cancer means how big it is and whether it has spread.