The most common symptoms of thyroid cancer include:

• A lump or swelling over your thyroid or somewhere else in your neck.
• A cough that lasts, or won't go away, without symptoms of a cold.
• Hoarseness or other changes in your voice that are persistent.
• Neck or throat pain, especially in the front of your neck (near your Adam's apple) that can sometimes go up to your ears.
• Swollen lymph nodes.
• Swollen neck.
• Trouble breathing that feels like you are breathing through a straw.
• Trouble swallowing.

Many of these symptoms may be caused by other health problems. But it is important to see your doctor if you have these symptoms. Only a doctor can tell if you have cancer.