Fig. 1

The appearance of foreign bodies lodged in the bronchus after bronchoscopy. a Pine needle foreign body, surrounded by granulation tissue wrapped, and adhesion of serious infection. b Green gelatinous round foreign body with smooth surface. c LED wick foreign body, the surface is sharp. d The beginning of the candy paper foreign body is sharp, and the surrounding granulation is wrapped. e The blood supply of granulation tissue wrapped on the surface of unknown foreign body is rich