Fig. 3

Bronchoscopy images show that the lesions extend from the middle trachea (a, b) to the carina (c) and from the bronchus intermedius (d) to the distal end of the left main bronchus (e). The stenosis was so severe that the Olympus 1TQ290 bronchoscope could not be passed through it. In the narrow band image (f), nodules and edema-like lesions can be seen, but the surface is smooth with little neovascularisation and continuity with the normal mucosa is maintained