Thyroid cancer
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.
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:
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.
Othersymptoms of thyroid cancer include:
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.
Find out about the symptoms of thyroid cancer, why it happens, how it's treated, and what the outlook is.
Find out about the main symptoms of thyroid cancer and when to get medical advice.
Find out about the tests that may be carried out to diagnose thyroid cancer, including blood tests and scans.
Find out about the main treatments for thyroid cancer, including surgery and radiotherapy.