NCT07833319RecruitingPhase 2
Local Methylene Blue Injection for Prevention of Anastomotic Leakage and Permanent Stoma After Low Anterior Resection for Rectal Cancer
A Prospective Single-arm Phase II Clinical Study Evaluating Local Methylene Blue Injection for Prevention of Anastomotic Leakage and Permanent Stoma in High-risk Patients With Rectal Cancer Undergoing Low Anterior Resection
Source: ClinicalTrials.gov · Last updated 22 Sept 2026
Brief summary (registry, in English)
Rectal cancer surgery has become increasingly effective, allowing many patients to avoid permanent colostomy. However, anastomotic leakage remains one of the most serious complications after rectal cancer surgery, especially in patients undergoing low anterior resection. Anastomotic leakage may lead to pelvic infection, prolonged hospitalization, additional treatments, and may affect the recovery of temporary diverting stomas. This investigator-initiated clinical study aims to evaluate the safety and potential effectiveness of local methylene blue injection around the pelvic floor after completion of colorectal anastomosis in patients with high-risk rectal cancer undergoing low anterior resection with a temporary diverting ileostomy. In this study, eligible patients will receive local injection of diluted methylene blue solution into the pelvic floor muscles surrounding the anastomosis after surgery. Participants will be followed for 12 months after surgery. The study will evaluate postoperative outcomes, including the occurrence of anastomotic leakage, complications related to the injection procedure, and whether the temporary stoma can be successfully reversed. The information collected in this study may help determine whether local methylene blue injection is a safe and feasible approach for reducing postoperative complications and improving recovery after rectal cancer surgery.
- Status (registry)
- Recruiting
- Phase (registry)
- Phase 2
- Study type
- Interventional
- Enrollment
- 26 (estimated)
- First submitted
- 28 Jul 2026
- Start date
- 25 Nov 2025
- Primary completion date
- 1 Jul 2027
- Lead sponsor
- Peking University Cancer Hospital & Institute
- Diseases
- Colorectal cancer
- NCT number
- NCT07833319
What you commit to
- Study type: Interventional · Phase 2
- Planned participants: 26
- From 25 Nov 2025 to the primary completion date, 1 Jul 2027
- 1 site in 1 country
- Visits and tests: ask the trial team, the registry does not list them
Built from the registry fields of ClinicalTrials.gov. It describes the study, not your situation.
Who cannot take part
Copied verbatim from ClinicalTrials.gov and grouped by topic. Only the trial team decides who can take part.
Prior treatment
- Patients undergoing abdominoperineal resection, local excision, or other surgical procedures without colorectal anastomosis and diverting ileostomy.
Other illness
- Patients with emergency surgical conditions, including intestinal obstruction, bowel perforation, or acute abdominal infection before surgery.
- Patients with other active malignancies or recurrent rectal cancer. Patients who are unable to tolerate the planned surgery or follow-up procedures.
- Patients with contraindications or known hypersensitivity to methylene blue injection.
Lab values
- Patients with severe medical conditions or laboratory abnormalities that may increase study-related risks or interfere with study outcome evaluation.
Who the study is looking for
- Adults aged 18 years or older with histologically confirmed rectal adenocarcinoma.
- Patients with mid or low rectal cancer (tumor located within 10 cm from the anal verge) who are scheduled to undergo curative low anterior resection with a temporary diverting ileostomy.
- Patients with one or more risk factors associated with postoperative stoma non-closure or anastomotic complications, including male sex, narrow pelvis, neoadjuvant chemoradiotherapy, prolonged operative time, or increased intraoperative bleeding risk.
- Patients who are considered suitable candidates for surgery and postoperative follow-up according to the investigator's assessment.
- Patients who are willing to provide written informed consent.
Age in the registry: 18 years to - · Sex: All · Does not accept healthy volunteers
Sites (1)
Sites in registry order. Pick your city on the disease page to sort them by distance.
| Site | City | Country | Site status |
|---|---|---|---|
| Beijing Cancer Hospital Coordinator of this site? Confirm its status | Beijing | China | Recruiting |
This page is information, not medical advice. Discuss any trial with your doctor.