Thyroid cancer

A cancer in the butterfly-shaped gland at the base of the neck, called the thyroid.

Thyroid cancer starts as a growth of cells in the thyroid. The thyroid is a butterfly-shaped gland located at the base of the neck.

Symptoms include a lump on the neck, hoarseness, and difficulty swallowing.

Treatment, which is usually successful, includes surgery, hormone therapy, radioactive iodine, radiation, and chemotherapy.