Current status of laparoscopy for the treatment of rectal cancer

Figure 1 Schematic illustration of port placement for laparoscopic proctectomy. Hasson cannula is placed first via a vertical infra-umbilical incision. The left lower quadrant port is not always used and is reserved for cases in which it is needed to facilitate splenic flexure mobilization and retraction at the time of pelvic dissection. It is usually needed in obese patients and in women with an enlarged uterus.