Cryotherapy in the upper air and food passages.
D003452:Cryosurgery; D004935:Esophageal Diseases / Q000628:therapy*; D004938:Esophageal Neoplasms / Q000601:surgery; D006801:Humans; D009061:Mouth Mucosa; D009584:Nitrogen; D010166:Palliative Care; D010212:Papilloma / Q000601:surgery; D014133:Tracheal Diseases / Q000628:therapy*; D014134:Tracheal Neoplasms / Q000601:surgery
D009584:Nitrogen