what is the noticeable signs of thyroid cancer?
But past radiation treatment of your head, neck, or chest (especially during childhood) can put you at risk of getting thyroid cancer. Thyroid cancer can cause several symptoms: 1  You may get a lump or swelling in your neck. 2  This is the most common symptom. 3  You may have pain in your neck and sometimes in your ears. 4  You may have trouble swallowing.