 Then, dissection of the hilum was performed, and the branches of the pulmonary artery to the lower lobe were ligated with #2-0 silk freehand ties proximally and distally and #3-0 silk transfixion stitches and then transected. 
Then , dissection of the hilum was performed , and the branches of the pulmonary artery to the lower lobe were ligated with # 2 - 0 silk freehand ties proximally and distally and # 3 - 0 silk transfixion stitches and then transected .