Frozen section biopsy in peroral endoscopy.
D001706:Biopsy; D001980:Bronchi; D004724:Endoscopy; D004938:Esophageal Neoplasms; D005629:Frozen Sections; D006801:Humans; D007822:Laryngeal Neoplasms; D007830:Larynx; D009369:Neoplasms; D014132:Trachea; D014134:Tracheal Neoplasms
BIOPSY; BRONCHI/neoplasms; ESOPHAGUS/neoplasms; LARYNX/neoplasms; TRACHEA/neoplasms