Assessment of additional diagnostic value of crystal violet staining with magnified endoscopy to narrow-band imaging magnified endoscopy for colorectal polyps: A multicenter prospective study

Assessment of additional diagnostic value of crystal violet staining with magnified endoscopy to narrow-band imaging magnified endoscopy for colorectal polyps: A multicenter prospective study - NBI-CV study

Status

Active, not recruiting

Phases

Unknown

Study type

Observational

Source

JPRN

Registry ID

JPRN-UMIN000031129

Enrollment

1170

Registered

2018-02-05

Start date

2018-02-02

Completion date

Unknown

Last updated

2026-06-29

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

Conditions

Colorectal polyp

Interventions

None listed

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: (1) Adults aged 20 years or above (2) Cases in which written informed consent is obtained before resection or biopsy (3) Cases in which colonoscopy is performed after approval of the ethics committee at the registration facilities

Exclusion criteria

Exclusion criteria: (1) Cases judged to be inappropriate by the examining physician

Design outcomes

Primary

Measure	Time frame
Diagnostic accuracy rate (additional diagnostic value of CV-ME to NBI-ME)	—

Countries

Japan,Europe

Contacts

Public ContactTomoaki Matsumura

Chiba University Department of Gastroenterology

matsumura@chiba-u.jp043-226-2083

Outcome results