Sigmoidocele, which is a type of obstructed defecation syndrome (ODS), is a peritoneal hernia of the pelvic floor that has been seldom studied individually. This study investigated the anatomic characteristics of sigmoidocele based on imaging features.
This retrospective cohort population comprised adult patients with ODS who underwent defecography between December 2017 and July 2020. Sigmoidocele was classified based on existing criteria. Novel radiological parameters including the vertical distance descended by the sigmoid colon from rest to maximum straining (RMS) and from the inferior border of the sigmoid colon to the superior border of the rectum at maximum straining (MSR) were measured.
Among 275 patients with sigmoidocele, 251 (91.6%) were female. The mean age was 51.53±12.99 years. We classified 26, 205, and 44 cases as grades I, II, and III, respectively. Patients with more severe sigmoidocele had greater sigmoid colon mobility (RMS: 19.13±8.54 mm, 34.45±14.51 mm, and 48.70±20.05 mm for grades I, II, and III, respectively; p < 0.001) and more pronounced compression of the rectum by the sigmoid colon at maximum straining (MSR: 35.23±8.44 mm, 26.33±13.29 mm, and 15.18±18.00 mm, respectively; p < 0.001). We regrouped the patients based on sigmoid colon alignment. Type L patients had the most severe constipation.
Our study presents a novel sigmoidocele classification. The anatomic appearance and location of the herniated sigmoid colon observed using fluoroscopy during defecation may help improve the clinical awareness of ODS caused by sigmoidocele.

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Rectal prolapse (RP) is often seen in patients over the age of fifty, particularly women. These patients frequently suffer from other concomitant pathologies like rectocele, sigmoidocele, cystocele, or even enterocele. Rectopexy with a mesh has been an established treatment for rectal prolapse. The utilization of the robotic system allows for a successful repair within a confined pelvic space, especially for precise suture placement when working with the mesh. A 77-year-old female presented with obstructed defecation syndrome (ODS) symptoms found to be caused by a progressive rectal prolapse. Her pre-operative ODS score was 9/20. Pelvic floor evaluation revealed concomitant rectocele and sigmoidocele. The patient was offered a robotic-assisted rectopexy with mesh placement to address the three concomitant pathologies. During the procedure, a posterior mesorectal mobilization with autonomic nerves preservation was performed to address the posterior leading edge of the prolapse. Subsequently, the vagina was separated from the anterior portion of the rectum and dissected down to the levator ani muscles and the perineal body. This allowed for the affixation of a polypropylene mesh to the anterior portion of the rectum. Anterior suspension of the mobilized rectum with the mesh addressed all three pathologies. No recurrence or complications occurred at two-year follow up. The patients ODS score decreased to 1/20.

Surgical treatment of pelvic floor disorders has significantly evolved during the last decade, with increasing understanding of anatomy, pathophysiology and the minimally-invasive \'revolution\' of laparoscopic surgery. Laparoscopic pelvic floor repair requires a thorough knowledge of pelvic floor anatomy and its supportive components before repair of defective anatomy is possible. Several surgical procedures have been introduced and applied to treat rectal prolapse syndromes. Transabdominal procedures include a variety of rectopexies with the use of sutures or prosthesis and with or without resection of redundant sigmoid colon. Unfortunately there is lack of one generally accepted standard treatment technique. This article will focus on recent advances in the management of pelvic floor disorders affecting defecation, with a brief overview of contemporary concepts in pelvic floor anatomy and different laparoscopic treatment options.