The technique the investigators propose to perform colorectal and colo-anal anastomosis in
patients underwent low and ultra-low anterior resection for rectal cancer could potentially
reduce the anastomotic leakage rate by better trans-anal introduction of the circular
stapler, elimination of the previous suture lines and dog ears, combined with direct
inspection of the anastomosis, easy performance of trans-anal air leak tests and eventually
direct repair of any small anastomotic defects. Another important point in cancer surgery is
the easily identification of the distal margin. In fact, this technique is simple to perform,
reproducible and safe in terms of complications.