Fig. 3

The sites of the portals and intraoperative views. a Portal sites: the first trocar was a 12-mm umbilical trocar and another such trocar was placed in the right lower abdomen, followed by three 5-mm trocars in the left lower and both sides of the abdomen. b The tattoo indicates the tumor site. c The arrow indicates the central ligation point of the inferior mesenteric artery. d Anastomosis was performed using the double-stapling technique