<prompt> Which of the following laser is most commonly used in laryngeal surgeryCO2 LaserNd YAG laserArgon LaserKTP Laser  <response>: Treatment consists of: 1. Radiotherapy 2. Surgery a Conservation laryngeal surgery b Total laryngectomy 3. Combined therapy. Surgery with pre- or postoperative radiotherapy 4. Endoscopic CO2 laser excision Ref: PL Dhingra; Textbook of EAR, NOSE and THROAT; edition 7; page no 351 