Evidence-based case report: How to deal with unpredicted endometriosis nodule closed to ureter and rectum during...

Endometriosis is characterized by the growth of endometrial-like tissue within and outside the pelvic cavity. Peritoneum nodules invaded more than 5 mm representing the commonest form of deep infiltrating endometriosis nodules might challenge inexperienced operator due to its location near ureter and the rectum. The aim is to provide important steps on how to deal with unexpected peritoneal endometrial nodules located closed to ureter and rectum.

A 43-year-old female underwent laparoscopic cystectomy after being diagnosed to have right endometriosis cyst. The researchers found multiple endometriosis nodules located closed to rectum and ureter after performing cystectomy. A search was conducted on PubMed® with the keywords of "Peritoneal endometriosis nodule" AND "rectovaginal endometriosis nodule" AND "Surgical ablation" OR "Surgical excision" AND "Laparoscopy" AND "Pelvic pain". Reference lists of relevant articles were searched for other possible relevant studies. After selecting the articles, the critical review was performed based on a standardized appraisal form for the treatment study.

Three eligible studies were appraised to assess the surgery outcome (dyspareunia), based on ablation and excision criteria. The pain was decreased during 6 months of follow up, with no difference in both techniques. The minimal requirement to remove the posterior nodules is knowledge of pelvic retroperitoneal anatomy.

In all endometriosis cases which require surgery will need to be performed by an experienced operator. If rectovaginal endometriosis nodule was unexpectedly found during intraoperative and recognition of rectum and ureter must be done, knowledge of retroperitoneal anatomy is required.