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In adult patients undergoing colonoscopy, does retroflexion of the colonoscope in the right colon compared to standard forward viewing endoscopy increase the detection of adenomatous colonic polyps.

Adult patients undergoing colonoscopy, does retroflexion of the colonoscope in the right colon compared to standard forward viewing endoscopy increase the detection of adenomatous colonic polyps.

Status
Not yet recruiting
Phases
Unknown
Study type
Interventional
Source
ANZCTR
Registry ID
ACTRN12613000424707
Acronym
n/a
Enrollment
1290
Registered
2013-04-16
Start date
2013-05-01
Completion date
Unknown
Last updated
2020-01-13

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

Conditions

None listed

Brief summary

This study aims to assess whether the use of a 'retroflexion' technique improves adenoma (tumour) detection in the right colon. Who is it for? You may be eligible to join this study if you are aged 18 years or above and are scheduled to undergo a complete colonoscopy. Trial details All participants in this trial will undergo a single colonoscopy which includes a technique known as 'retroflexion' in the right colon. This is standard practice for many endoscopists. The procedure duration is approximately 20 minutes with retroflexion only adding an extra 1-2mins to the total procedure time. Adenoma detection rate from the standard forward view assessment will be compared to that from retroflexion. It is thought that retroflexion may improve the detection of polyps behind folds that may not be seen on standard forward view.

Interventions

Retroflexion of the colonoscope in the right colon which is standard practice for many endoscopists despite the paucity of data anaecdotally is thought to improve the detection of polyps behind folds that may not been seen on standard forward view withdrawal. The procedure duration for colonoscopy is approximately 20 minutes with retroflexion only adding an extra 1-2mins to the total procedure time and is standard practice for the endoscopists involved. The process is undertaken in each patient

Retroflexion of the colonoscope in the right colon which is standard practice for many endoscopists despite the paucity of data anaecdotally is thought to improve the detection of polyps behind folds that may not been seen on standard forward view withdrawal. The procedure duration for colonoscopy is approximately 20 minutes with retroflexion only adding an extra 1-2mins to the total procedure time and is standard practice for the endoscopists involved. The process is undertaken in each patient once.

Sponsors

Austin Health Department of Gastroenterology
Lead SponsorHospital

Study design

Allocation
Non-randomised trial
Intervention model
Single group
Primary purpose
Diagnosis
Masking
Open (masking not used)

Eligibility

Sex/Gender
All
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

Adults aged >18. Complete colonoscopy Satisfactory or good bowel preparation. Operators: Consultant gastroenterologists

Exclusion criteria

Patients with active underlying inflammatory bowel disease or polyposis syndromes. Poor bowel preparation at the time of colonoscopy. Previous surgical resection of the right colon. Incomplete colonoscopy Polyp specimen not retrieved for analysis.

Outcome results

None listed

Source: ANZCTR · Data processed: Mar 19, 2026