title: An unusual foreign body in the tracheo-bronchial tree.
mesh_terms: D000328:Adult; D001980:Bronchi; D001999:Bronchoscopy; D003343:Corrosion; D005547:Foreign Bodies; D006801:Humans; D008297:Male; D014132:Trachea; D014140:Tracheotomy / Q000009:adverse effects*