The largest gland in the neck, the thyroid serves to regulate the body's metabolism. Parathyroid glands are typically located right next to the thyroid gland and control how much calcium is in the blood and in the bones. It is relatively common for nodules to form in the thyroid gland. Although any nodule should immediately be investigated, most nodules found in the thyroid gland are benign. Cancerous nodules, when diagnosed early, have a very high cure rate if properly treated. Cancer of the parathyroid glands is extremely rare. An Adenoma of a parathyroid gland is discussed below. You can also call us today to find out if thyroid surgery is a good option for you.