A comparative study to assess the safety and efficacy of underwater EMR for intermediate size (10-20 mm) colorectal polyps.

A comparative study to assess the safety and efficacy of underwater EMR for intermediate size (10-20 mm) colorectal polyps. - UEMR vs C-EMR study

Status

Active, not recruiting

Phases

Phase 2

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000018989

Enrollment

230

Registered

2015-09-12

Start date

2015-09-14

Completion date

Unknown

Last updated

2026-06-29

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

Conditions

Sessile colorectal polys 10mm - 20mm in diameter.

Interventions

Underwater EMR group Conventional EMR group

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: 1)Patients undergoing colorectal polypectomy (polyps < 10mm) 2) Written Informed consent. 3) 20 y.o. <

Exclusion criteria

Exclusion criteria: 1)pedunculated polyp 2)residual lesions after EMR 3)patients with marked electrolyte abnormality 4)patients with hematological abnormality 5)patients with severe organ failure 6) patients with inflammatory bowel disease and polyposis 7) patients who have been judged as inappropriate for this study

Design outcomes

Primary

Measure	Time frame
Histologic complete resection rate	—

Secondary

Measure	Time frame
Endoscopic complete resection rate, R0 resection rate, Adverse events, Total procedure time, The incidende of residual poyp on follow-up colonoscopy 12 months	—

Countries

Japan

Contacts

Public ContactIwatsubo taro

Osaka international cancer institute Department of Gastrointestinal Oncology

iwatubo-ta@mc.pref.osaka.jp06-6945-1181

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026