Park YM, et al. - Reachers probed the differences in functional outcomes of postoperative complications and hypoparathyroidism between patients who had undergone completion thyroidectomy (CT) following thyroid lobectomy or total thyroidectomy (TT) as an initial treatment. Compared to TT patients, the incidence of transient hypoparathyroidism in CT patients was significantly lower. While determining the scope and extent of operation in patients requiring surgery for thyroid disease, the safety and functional superiority of CT ought to be considered.