<prompt> Laryngeal papilloma-SingleMultipleSeen in childrenAll  <response>: Ans. is a i.e., Single; b i.e., Multiple c i.e., Seen in children Laryngeal papilloma o Most common benign tumor of larynx Single or multiple irregular, wa like glottic masses. HPV-6 11 may be the causative factor. Treatment is with CO2 laser ablation. a-IFN and indole - 3 - carbinole may also be used. 