To diagnose thyroid cancer, your doctor'll ask about your symptoms, examine you, may also ask about your medical history and arrange blood tests. If your doctor suspects a tumour, you'll be referred to a specialist for further tests which may include:a blood sample to check, eg the thyroid hormone levels in your blood; an ultrasound scan of your neck to get an image of the thyroid; a small sample of tissue of a lump in your thyroid. This will be sent for testing to find out if the cells are benign or cancerous. The results of your tests will decide the treatment you need. If you have cancer, you may need to have other tests to assess if the cancer has spread.
Attribution: BUPA