What are the symptoms of thyroid cancer?  Thyroid cancer usually develops slowly and initially does not cause any symptoms. The most common first sign is a small lump in the neck, which is painless. Other symptoms which may develop as the cancer grows include:  Hoarseness or difficulty in speaking in a normal voice. Swollen lymph glands in the neck. Difficulty swallowing or breathing as the cancer presses on the foodpipe or windpipe. Pain in the throat or neck. Note: most lumps in the…
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