Study on the safety of retention range of pelvic floor peritoneum during laparoscopic Miles surgery / 中国医师进修杂志

ABSTRACT

Objective To investigate the safety retention range of pelvic floor peritoneum by performing pathological examinations on pelvic floor peritoneal tissue at different distance from the rectolateral incisional margin during laparoscopic Miles surgery. Methods To conduct the research, pathological examination was performed on 50 patients who had undergone laparoscopic Miles surgery in Chengdu Fifth People′s Hospital from October 2015 to October 2017 and staged under cT3N0M0. The research examined their pelvic floor peritoneum at different distance from the rectum on the "yellow-white border line", with the incisal edge being the first pathological testing point, the area 5 mm from rectum being the second testing point, and the area 10 mm from rectum being the third testing point. Results Among these 50 cases, 4 of which had pathological staging pT2-3N1-2M0 and were excluded from the research. The other 46 cases had pathological staging pT2-3N0M0. After pathological examination of the three points of each case, no tumor cells were found. There was no difference in the positive rate of tumor cells at each site, and all of which was 0. The credibility interval of 95% was estimated (46 cases) and the check table value was 0 to 0.08. Conclusions The closure of the pelvic floor peritoneum is beneficial to the patient in laparoscopic Miles surgery. Moreover, for those low rectal cancer patients with T3N0M0, proper retention of pelvic floor peritoneum within 10 mm from the incisal edge is pathologically safe.