Clinical trial · Interventional
Endoscopic Submucosal Dissection Versus Transanal Endoscopic Microsurgery For Early Rectal Neoplasms And Large Rectal Adenomas: Сomparison Of Treatment Efficacy And Safety.
Randomized Controlled Trial of Endoscopic Submucosal Dissection Versus Transanal Endoscopic Microsurgery For Early Rectal Neoplasms And Large Rectal Adenomas: Сomparison Of Treatment Efficacy And Safety.
- Source
- ClinicalTrials.gov
- Retrieved
- Sep 8, 2026
- Layer
- normalized (units and labels harmonized; values unchanged)
- Run
- ING-CLINICALTRIALS-20260908-000001
Summary
Brief summary (as posted)
Transanal endoscopic microsurgery is the main treatment option for rectal tumors such as large adenoma, early cancer because of lower complications and mortality rates and shorter hospital stays rather than conventional surgery. Particularly, However, transanal endoscopic microsurgerymust be performed under either general or spinal anesthesia, and expensive surgical instruments are required. Colorectal endoscopic submucosal dissection is a novel endoscopic procedure that enables en bloc resection of benign colorectal lesions and early colorectal cancer. Endoscopic submucosal dissectioncan be performed under conscious sedation without anesthesia, and there are fewer hospital days than those for transanal endoscopic microsurgery. In the present study, we compared the treatment efficacy and safety between endoscopic submucosal dissectionand transanal endoscopic microsurgery for the treatment of early rectal neoplasms and large rectal adenomas.
Conditions
Conditions (2)
Free-text conditions as registered, with the CancerIndex entity they were reconciled to and the match type.
| Condition (as posted) | Mapped entity | Match | Confidence |
|---|---|---|---|
| Early Rectal Cancer | — | UNRESOLVED | — |
| Large Rectal Adenomas | — | UNRESOLVED | — |
Interventions
Interventions (2)
| Intervention | Type | Mapped drug | Match |
|---|---|---|---|
| endoscopic submucosal dissection | Procedure | — | UNRESOLVED |
| transanal endoscopic microsurgery | Procedure | — | UNRESOLVED |
Design
Arms and outcomes
Arms (2)
- type
- ACTIVE_COMPARATOR
- label
- transanal endoscopic microsurgery
- description
- a TEM tube will be inserted in the rectum. With specialized instruments the adenoma will be dissected en bloc by a full thickness excision, after which the patient will be admitted to the hospital.
- interventionNames
- Procedure: transanal endoscopic microsurgery
- type
- EXPERIMENTAL
- label
- endoscopic submucosal dissection
- description
- an endoscope will be inserted into the rectum and the submucosa underneath the lesion will be injected with saline to lift the adenoma. With an endoscopic knife (Insulated Tip Knife, Olympus or Water Jet, Erbe) the lesion will be resected through the submucosal plane in an eb-bloc fashion, after which the patient will be observed for at least 24h in-hospital.
- interventionNames
- Procedure: endoscopic submucosal dissection
Primary outcomes (2)
Eligibility
Eligibility (as posted)
- Sex
- All
- Minimum age
- 18 Years
Show eligibility criteria text
Inclusion Criteria: * The lower and upper borders of the adenoma or early rectal cancer are located at ≥2 cm and ≤15 cm from the anal verge, respectively. * Have signed approved informed consent form for the study * preoperative stage uT0 and/or uT1, mrT0 and/or mrT1 Exclusion Criteria: * non-epithelial tumors * tumors \</= 3 cm in size * recurrent tumors * suspicion of lymph node metastasis (N + disease) * preoperative stage uT2 and/or mrT2 * mucous or low-grade adenocarcinoma * preoperative stage rM1 and/or uM1
References
Publications (1)
- DERIVEDRybakov E, Chernyshov S, Likutov A, Khomiakov E, Yugai O, Alekseev M, Maynovskaia O, Tarasov M, Achkasov S. The results of randomized controlled trial comparing effectiveness of transanal endoscopic microsurgery versus endoscopic submucosal dissection. Surg Endosc. 2026 Jan;40(1):469-474. doi: 10.1007/s00464-025-12319-7. Epub 2025 Oct 24. PMID 41136652