Symptoms

The main symptom of thyroid cancer is a lump in the front of the neck. But thyroid cancer tends to develop slowly and there may not be any symptoms at first. Neck lump Thyroid cancer often causes a painless lump or swelling low down in the front ofthe neck. However, neck lumps are common and are usually causedby a less serious condition, such as an enlarged thyroid (goitre) . Only around 1 in every 20 is cancer. A neck lump is more likely to be cancer if it: feels firm doesn't move around easily under the skin gets bigger over time See your GP ifyou have a swelling or lumpat the front of your neck. While it's unlikely to be cancer, it's important to get it checked out. Other symptoms Othersymptoms of thyroid cancer include: swollen glands in the neck unexplained hoarseness that doesn't get better after a few weeks a sore throat that doesn't get better pain in your neck difficulty swallowing breathing difficulties Rarely, thyroid cancer can affect the production of thyroid hormones and cause diarrhoea and flushing . These problems can have causes other than cancer, but it's a good idea to see your GP if you develop any persistent symptoms that you're worried about.