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Modified underwater endoscopic mucosal resection versus endoscopic submucosal dissection for the treatment of 2cm-4cm non-pedunculated colorectal polyps:a prospective cohort study

Modified underwater endoscopic mucosal resection versus endoscopic submucosal dissection for the treatment of 2cm-4cm non-pedunculated colorectal polyps:a prospective cohort study

Status
Recruiting
Phases
Unknown
Study type
Interventional
Source
ChiCTR
Registry ID
ChiCTR2500099961
Enrollment
Unknown
Registered
2025-04-01
Start date
2025-02-17
Completion date
Unknown
Last updated
2025-04-07

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Colorectal polyps

Interventions

ESD:ESD surgery
Tip-in UEMR:Snaturing (tip-in UEMR) surgery

Sponsors

Second Affiliated Hospital of Chongqing Medical University
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: Non-pedunculated colorectal lesions, 20-40 mm in size.

Exclusion criteria

Exclusion criteria: These include pedunculated lesions, residual lesions after endoscopic resection, familial polyposis syndrome, lesions in patients with inflammatory bowel disease, lesions suspected of deep submucosal invasion (based on white light morphology and magnified NBI assessment), and patients unwilling to provide written informed consent.

Design outcomes

Primary

MeasureTime frame
R0 resection rate;—

Secondary

MeasureTime frame
Relapse rate;—

Countries

China

Contacts

Public ContactHe Song

Second Affiliated Hospital of Chongqing Medical University

hedoctor65@sina.com+86 138 0833 6120

Outcome results

None listed

Source: ChiCTR (via WHO ICTRP) · Data processed: Feb 4, 2026