Functional outcomes after disc excision in deep endometriosis of the rectum using transanal staplers: a series of 111 consecutive patients

Abstract

To assess the postoperative outcomes of patients with rectal endometriosis managed by disc excision using transanal staplers. Prospective study using data recorded in the CIRENDO database (NCT02294825). University tertiary referral center. A total of 111 consecutive patients managed between June 2009 and June2016. We performed rectal disc excision using two different transanal staplers: [1] the Contour Transtar stapler (the Rouen technique); and [2] the end to end anastomosis circular transanal stapler. Pre- and postoperative digestive function was assessed using standardized gastrointestinal questionnaires: the Gastrointestinal Quality of Life Index and the Knowles-Eccersley-Scott Symptom Questionnaire. The two staplers were used in 42 (37.8%) and 69 patients (62.2%), respectively. The largest diameter of specimens achieved was significantly higher using the Rouen technique (mean ± SD, 59 ± 11mm vs. 36 ± 7mm), which was used to remove nodules located lower in the rectum (5.5 ± 1.3cm vs. 9.7 ± 2.5cm) infiltrating more frequently the adjacent posterior vaginal wall (83.3% vs. 49.3%). Associated nodules involving sigmoid colon were managed by distinct procedures, either disc excision (2.7%) or segmental resection of sigmoid colon (9.9%). Postoperative values for the Gastrointestinal Quality of Life Index increased 1 and 3years after the surgery, but improvement in constipation was not significant. The probability of pregnancy at 1year after the arrest of medical treatment was 73.3% (95% confidence interval 54.9%-88.9%), with a majority of spontaneous conceptions. Disc excision using transanal staplers is a valuable alternative to colorectal resection in selected patients presenting with rectal endometriosis, allowing for good preservation of rectal function.