The authors, who have a long experience of polyglactin 910 mesh advocate its use for pelvic peritonization in two different situations and with two different techniques. The "lower controlled peritonization" technique aims at obtaining rapid and satisfactory healing of the peritoneum in wide resections or resections in high risk patients. The "upper controlled peritonization" technique creates a "hammock" across the upper pelvic inlet, thus protecting intestinal loops against post-operative irradiations.