Clinical trial · Interventional
Inspection of the Colon Using a Retrograde Viewing Device for Detection of Colorectal Polyps
NCT04107376CI-TRIAL-00040888unknownN/AClinicalTrials.gov clinicaltrialsProvenance
- 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)
During standard colonoscopy a substantial number of colorectal polyps may be missed. Previous studies have found a 12-28% of miss rate for all polyps, a 31% for hyperplastic polyps and 6-27% for adenomas. In this study it is tested whether a retro viewing endoscope can detect more colorectal polyps in comparisson to standard forward viewing endoscopy. Further, ppolyps detected, mean adenomas per Patient and withdrawal time are recorded.
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 |
|---|---|---|---|
| Adenoma | Adenoma | ONTOLOGY_EXACT | 0.98 |
| Polyps | — | UNRESOLVED | — |
Interventions
Interventions (1)
| Intervention | Type | Mapped drug | Match |
|---|---|---|---|
| Retroviewing endoscopy | Diagnostic Test | — | UNRESOLVED |
Design
Arms and outcomes
Arms (2)
- type
- EXPERIMENTAL
- label
- Retroviewing endoscopy (RVE)
- description
- Withdrawal in every colonic segment with SFV (standard forward view) followed by another withdrawal with the retroviewing endoscope. Allocation of patients to each arm (RVE or SFVE) is done by randomization using sealed envelopes.
- interventionNames
- Diagnostic Test: Retroviewing endoscopy
- type
- ACTIVE_COMPARATOR
- label
- standard forward viewing endoscopy (SFVE)
- description
- Withdrawal in every colonic segment with SFV followed by another withdrawal with SFV. Allocation of patients to each arm (RVE or SFVE) is done by randomization using sealed envelopes.
- interventionNames
- Diagnostic Test: Retroviewing endoscopy
Primary outcomes (1)
- measure
Eligibility
Eligibility (as posted)
- Sex
- All
- Minimum age
- 18 Years
- Maximum age
- 85 Years
Show eligibility criteria text
Inclusion Criteria: * screening colonoscopy * 18 years of age Exclusion Criteria: * inflammatory bowel disease * inadequate bowel preparation
References
Publications (0)
Data not yet available
No reference posted for this study.