Removal of the thyroid gland generally refers to thyroid surgery. The possible effects of thyroid surgery include hypothyroidism, bleeding, incision infection, respiratory obstruction, parathyroid injury (transient or permanent hypocalcemia), recurrent laryngeal nerve injury, and superior laryngeal nerve injury. To minimize the adverse effects of thyroidectomy on the patient, it is recommended that the patient be adequately assessed for surgical risk (e.g., how well the respiratory function is functioning, the presence of respiratory infections, the normalization of the vocal cords, the presence of tracheal compression, and the presence of any other concomitant underlying diseases) prior to the operation. Patients requiring thyroidectomy are advised to visit a hospital and consult a medical professional in detail.