 The vessel sealing system has been widely used in head and neck surgery because of its effectiveness and safety. It was also found quite effective and safe in tonsillectomy procedures, providing excellent hemostasis and minimal tissue trauma. This study was planned to compare vessel sealing system tonsillectomy VSST to the traditional cold knife tonsillectomy CKT with special regard to intraoperative bleeding, operative time, postoperative pain and hemorrhage. 