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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.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Retroviewing endoscopy (RVE) | Experimental | 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. |
|
| standard forward viewing endoscopy (SFVE) | Active Comparator | 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. |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Retroviewing endoscopy | Diagnostic Test | The colon is inspected with a new retroviewing endoscope |
|
| Measure | Description | Time Frame |
|---|---|---|
| Adenoma detection rate | calculation of the adenoma detection rate in each arm | 8 months |
| Measure | Description | Time Frame |
|---|---|---|
| Polyp detection rate | polyp detection rate in each arm | 8 months |
| Mean number of adenomas per patient | Mean number of adenomas per patient in each arm |
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Inclusion Criteria:
Exclusion Criteria:
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| Name | Role | Phone | Extension | |
|---|---|---|---|---|
| Timo Rath, MD | Contact | +49 9131 85 35000 | timo.rath@uk-erlangen.de |
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| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| University Hospital Erlangen | Recruiting | Erlangen | 91054 | Germany |
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| ID | Term |
|---|---|
| D000236 | Adenoma |
| D011127 | Polyps |
| ID | Term |
|---|---|
| D009375 | Neoplasms, Glandular and Epithelial |
| D009370 | Neoplasms by Histologic Type |
| D009369 | Neoplasms |
| D020763 | Pathological Conditions, Anatomical |
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| 8 months |
| Withdrawal time | Withdrawal time in each arm | 8 months |
| D013568 | Pathological Conditions, Signs and Symptoms |