The thyroid gland is located in the front of the neck, below the laryngeal nodes and on either side of the trachea. Normally, the thyroid gland is not palpable, that is, you can’t feel it. If the thyroid gland is enlarged, or if there are nodules or lumps on the thyroid gland, they can be felt. Diffuse enlargement of the thyroid gland is usually seen when the thyroid gland is hyperthyroid, and is manifested by enlargement of both thyroid glands at the same time. If a nodule develops in the thyroid gland, it can occur on one side of the thyroid gland or on both sides at the same time. If a nodule develops in the thyroid gland, the nodule is usually hard and the border can be clear or indistinct, and the nodule can move up and down with swallowing. Ultrasonography is required to make a preliminary determination of the nodule. If the nodule is malignant, surgery should be performed. For benign nodules, if the nodule is less than three centimeters, it can be conservative; if it is more than three centimeters and has symptoms of pressure, surgery is recommended.