Fig. 4

Operative findings. A The upper lobe bronchial bifurcation was transected in a wedged shape at a sharp angle and depth. B A continuous suture was applied from the ventral side. C Another continuous suture was applied from the cranial side. D Continuous sutures were made until each thread passed through the other (arrowhead: the suture from the ventral side, arrow: the suture from the cranial side)