Conservative laryngeal surgery.
D006801:Humans; D007822:Laryngeal Neoplasms / Q000601:surgery*; D007830:Larynx / Q000293:injuries / Q000601:surgery*; D008722:Methods; D014132:Trachea / Q000293:injuries / Q000601:surgery*; D014134:Tracheal Neoplasms / Q000601:surgery*