Fig. 1

a Preoperative bronchoscopy showing a tumor mass obstructing the orifice of the right lower lobe bronchus. b Four-arm ports (camera and arm-1, −2, −3) and assistant incisions wounds (arm-3 port incision wound is not shown here). c Robotic bronchial anastomosis using four arms. Transected bronchi were trimmed (a), a single row of interrupted sutures were started the farthest from the camera (b), and the rest of the sutures were completed (c and d). (d) Postoperative bronchoscopy revealing no signs of anastomotic leak or stricture. IMD: intermediate bronchus; RLL: right lower lobe bronchus; RML: right middle lobe bronchus