The thyroid is a gland located at the base of the neck. It makes thyroid hormones, which control the way the body uses energy.
A thyroid nodule is a solid or fluid-filled lump found within the thyroid. The majority of thyroid nodules are small, can’t be felt by touch and do not cause symptoms. They are caused by an overgrowth of cells in the thyroid gland. In a few people, the nodules grow and cause symptoms such as pressure, difficulty swallowing or breathing.
