Clinical trial Recruiting at 1 site Interventional Ages 18 to 55 Women only

Intra-operative dual laparoscopy and neo-rectoscopy (IDLnR) versus conventional laparoscopy for bowel endometriosis

Official title: Efficacy and Safety of Intra-operative Dual Laparoscopy and Neo-rectoscopy (IDLnR) Versus Conventional Laparoscopic Surgery for Bowel Endometriosis: A Multicenter, Open-Label, Randomized Controlled Trial (LUMEN-01)

Run by Obstetrics & Gynecology Hospital of Fudan University · NCT07523308 · Data updated 2026-11-12

We will test whether adding intra-operative dual laparoscopy and neo-rectoscopy (IDLnR) to surgery for women with bowel endometriosis improves bowel function six months after the operation compared with conventional laparoscopy.

More Bowel Endometriosis trials

Quick facts

Study typeInterventional
Ages18 Years to 55 Years
SexWomen only
Enrollment192 (estimated)
SponsorObstetrics & Gynecology Hospital of Fudan University
Academic / other
Locations3 sites (Shanghai, Shanghai Municipality and 2 other locations)
StatusRecruiting
StartedApril 13, 2026
Main results expectedNovember 30, 2027
Study endsMay 31, 2028
Registry record updatedMay 19, 2026
Trial IDNCT07523308 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Premenopausal women aged 18–55 with imaging-confirmed bowel endometriosis involving the muscular layer of the rectum or sigmoid, a pre-treatment LARS score >20, and who are eligible for laparoscopic surgery and able to give informed consent.

Probably not a fit

Pregnant or lactating women, patients with recent inflammatory bowel disease or active gastrointestinal infections, those with suspected malignancy, or patients with ASA physical status ≥III are excluded and unlikely to benefit from this surgical approach.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This is a prospective, multicenter, randomized controlled trial enrolling premenopausal women with MRI or transrectal endosonography-confirmed bowel endometriosis of the rectum or sigmoid and a pre-treatment LARS score over 20. Participants are randomized to receive either intra-operative dual laparoscopy and neo-rectoscopy (IDLnR) or conventional laparoscopy (CL) during their bowel endometriosis surgery. The primary outcome is change in postoperative bowel function at six months, and secondary outcomes include 30-day complications, various symptom and quality-of-life scores (LARS cure/improvement rate, CRADI-8, Wexner, GIQLI, EHP-30, VAS), antibiotic use intensity, and length of hospital stay. Postoperative pathological diagnosis is used as the gold standard and outcomes are compared between the two groups.

Why it matters

Potential benefit: If successful, IDLnR could improve bowel function six months after surgery and reduce complication-related setbacks for women undergoing surgery for bowel endometriosis.

How similar studies have gone: Dual-scope intraoperative techniques have shown promise in some colorectal surgical settings, but randomized evidence specifically testing IDLnR for bowel endometriosis is limited.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Premenopausal women aged 18 to 55 years.
* Preoperative pelvic contrast-enhanced MRI and/or transrectal endosonography confirmed bowel endometriosis (BE) lesions involving the muscular layer of the intestinal wall, located in the rectum and/or sigmoid colon. Postoperative pathological diagnosis serves as the gold standard.
* Pre-treatment LARS score \> 20.
* Eligible for laparoscopic surgery.
* Voluntarily participated in this study and signed written informed consent

Exclusion Criteria:

* Pregnancy or lactation.
* Presence of active inflammatory bowel disease, irritable bowel syndrome, or other similar conditions with disease flare-ups within the past 1 year.
* Acute or severe infectious disease within 4 weeks prior to surgery.
* History of malignant tumor, or highly suspected gynecological/gastrointestinal malignancy based on preoperative imaging or tumor marker tests.
* American Society of Anesthesiologists (ASA) physical status classification ≥ Grade Ⅲ, or severe cardiac, pulmonary, hepatic, renal, or coagulation dysfunction that precludes general anesthesia and elective laparoscopic surgery.
* Undergoing robot-assisted laparoscopic surgery or open laparotomy.
* Currently participating in other clinical trials that may affect the outcome assessment of this study.
* Previous participation in other interventional clinical trials that may affect the outcome assessment of this study.
* History of colorectal resection and anastomosis or stoma surgery.
* History of pelvic radiotherapy.

Where it's running

  • Obstetrics and Gynecology Hospital of Fudan University
    Shanghai, Shanghai Municipality, China
    Recruiting
  • International Peace Maternity and Child Health Hospital
    Shanghai, Shanghai Municipality, China
    Not yet recruiting
  • Shanghai First Maternity and Infant Hospital
    Shanghai, Shanghai Municipality, China
    Not yet recruiting

Study contacts

  • Principal investigator: Xiaofang Yi — Obstetrics & Gynecology Hospital of Fudan University
  • Study coordinator: Xiaofang Yi, MD
  • Email: yix@fudan.edu.cn
  • Phone: +86 21 33189900

Similar studies

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How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.