Observational study on removing large colorectal polyps

Large Polyp Study (LPS) III - Endoscopic Resection of Large Colorectal Polyps: An Observational Cohort Study

Observational White River Junction Veterans Affairs Medical Center · NCT04220905

This study is testing different ways to safely remove large polyps from the colon and duodenum to see how well they work for a wider range of patients.

Quick facts

Study typeObservational
Enrollment1500 (estimated)
Ages18 Years and up
SexAll
SponsorWhite River Junction Veterans Affairs Medical Center Federal
Locations1 site (White River Junction, Vermont)
Trial IDNCT04220905 on ClinicalTrials.gov

What this trial studies

This observational cohort study aims to evaluate the safety and effectiveness of endoscopic resection techniques for large colorectal and duodenal polyps. It builds on previous research primarily conducted in Australia, seeking to determine if those findings are applicable to a broader population. The study will enroll patients who may not qualify for randomized trials, allowing for a more representative sample and the exploration of various resection methods. By examining outcomes in a diverse patient population, the study aims to enhance understanding of adverse event risks associated with polyp removal.

Who should consider this trial

Good fit: Ideal candidates include patients aged 18 and older with large colorectal polyps (≥20mm) or duodenal polyps (≥10mm) who are undergoing endoscopy.

Not a fit: Patients requiring emergency endoscopy, those with significant coagulopathy, poor bowel preparation, or who are pregnant may not benefit from this study.

Why it matters

Potential benefit: If successful, this study could improve the safety and efficacy of large polyp removal, potentially reducing the risk of colorectal and duodenal cancer.

How similar studies have performed: Previous studies have shown promising results in the safety and efficacy of large polyp resections, but this study aims to validate those findings in a different population.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Any patient ≥18 who presents for an upper endoscopy or colonoscopy and who does not have criteria for exclusion
* Patients with a ≥20mm colon polyp
* Patients with a ≥10mm duodenal polyp

Exclusion Criteria:

* Patients who are receiving an emergency endoscopy
* Patients with coagulopathy with an elevated INR ≥1.5, or platelets \<50
* Poor bowel preparation
* Pregnancy

Where this trial is running

White River Junction, Vermont

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Colonic PolypColonoscopyComplicationRecurrenceDuodenal Polyp
Last reviewed 2026-06-09 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.