Fig. 3

A Right main bronchus, a tumor obstructs the right B1 bronchus (black arrow), and superficial invasion extends proximally to the distal trachea. B The first bronchoscopy on postoperative day 5 shows an intact bronchial anastomosis (white arrow) with slight bronchial edema and hyperemia. C Three months after PDT, the lesion is completely healed by re-epithelization of the normal mucosa. The anastomosis site is slightly narrowed, but the patency is acceptable