Fig. 3

Schaematic diagram of lingular segment bronchial sleeve resection. a Cut open the bronchus and a round tumour with intact membrane was then revealed. b Narrow the rim of LUL bronchus to better match the calibre of the distal segment bronchus with a 5-0 Prolene. c End-to-side bronchial anastomosis was performed by a 5-0 PDS II continuous running suture. d The knot was placed on the anterior portion of the bronchus