Endocrine surgery is a specialised field of surgery that focuses on the treating of problems of the thyroid, parathyroid and adrenal glands, as well as endocrine carcinomas of the gastrointestinal tract and the pancreas. Endocrine surgery can be performed on endocrine glands to treat a hormonal or anti-hormonal effect in the human body. This involves surgery to eliminate carcinomas which has developed within or on endocrine gland. The method of operation through endoscopic technique is denoted as endonasal surgery. The endocrine operation typically involves the, parathyroid glands thyroid gland, and adrenal glands. The most common endocrine surgeries will include elimination of the thyroid, and then after followed by parathyroid gland removal.