If you notice any symptoms, make an appointment to see your GP. You can also mention any mouth sores, swelling or change of colour in your mouth to your dentist.
Your GP or dentist may do some general tests and then refer you to a specialist. Depending on your symptoms, tests will include examinations, tissue sampling (biopsy) and imaging tests. Further tests may be needed to work out whether the cancer has spread. The tests you have will depend on your specific situation.
For more on this, listen to our podcast on Tests and Cancer.
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Video: Cancer and common diagnostic tests
Watch this short video to learn about what cancer is, and some common diagnostic tests.