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Near-focus versus Normal-focus Narrow Band Imaging Colonoscopy in Diagnosis of Colorectal Polyps based on Combined NICE and WASP Classification: a Randomized Controlled Trial

Near-focus versus Normal-focus Narrow Band Imaging Colonoscopy in Diagnosis of Colorectal Polyps based on Combined NICE and WASP Classification: a Randomized Controlled Trial

Status
Recruiting
Phases
Unknown
Study type
Interventional
Source
TCTR
Registry ID
TCTR20200303001
Enrollment
400
Registered
2020-03-03
Start date
2019-04-01
Completion date
Unknown
Last updated
2026-08-03

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

Conditions

Optical diagnosis of colorectal polyp Colorectal polyp NICE classification WASP classification Near&#45

Interventions

High definition white light colonoscopy ของบริษัทOlympus รุ่น CF&#45
HQ190 with near&#45
focus mode,High definition white light colonoscopy ของบริษัทOlympus รุ่น CF&#45
HQ190 with normal&#45
focus mode
Active Comparator Device,Active Comparator Device
Near&#45
focus NBI colonoscopy,Normal&#45
focus NBI

Sponsors

Prince of Songkla University
Lead Sponsor

Eligibility

Sex/Gender
All
Age
18 Years to 75 Years

Inclusion criteria

Inclusion criteria: patients, aged 18-75 years, underwent colonoscopy

Exclusion criteria

Exclusion criteria: &#45;patients with inflammatory bowel disease&#44; adenomatous polyposis&#44; active gastrointestinal bleeding&#44; history of colon cancer&#44; known colonic mass &#45;platelet 1.5 &#45;pregnant &#45;inadequate bowel preparation (Boston Bowel Preparation Scale < 5)

Design outcomes

Primary

MeasureTime frame
polyp classification At the time of colonoscopy NICE and WASP classification—

Secondary

MeasureTime frame
none none none—

Countries

Thailand

Contacts

Public ContactNatcha Cheewasereechon

Natcha Cheewasereechon

natchachee@hotmail.com0897964822

Outcome results

None listed

Source: TCTR (via WHO ICTRP) · Data processed: Aug 9, 2026