Direct peroral cholangioscopic diagnosis of bile duct lesions by high definition ultraslim endoscopy combined with computed virtual chromoendoscopy using i-scan; a pilot study (with videos)

Direct peroral cholangioscopic diagnosis of bile duct lesions by high definition ultraslim endoscopy combined with computed virtual chromoendoscopy using i-scan; a pilot study (with videos) - computed virtual chromoendoscopy using i-scan versus white light in the evaluation of biliary tract lesions

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000021009

Enrollment

Registered

2016-02-14

Start date

2009-09-20

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

biliary polypoid and elevated lesions

Interventions

DPOC with NBI DPOC with i-scan

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: 1. Intraductal bile duct mucosal lesion 2. Bile duct diameter >8mm 3. A previous sphincteroplasty such as major endoscopic sphincterotomy and/or endoscopic papillary balloon dilatation during a prior ERCP.

Exclusion criteria

Exclusion criteria: 1. a bleeding tendency (international normalized ratio >1.5 or platelet count <50,000/mm3) 2. diffuse stricture of the distal CBD, evidence of pancreatic cancer or tumor at the ampulla of Vater 3. contraindications for endoscopic retrograde cholangiography

Design outcomes

Primary

Measure	Time frame
Diagnostic efficacy of direct POC with NBI or i-scan in biliary polypoid and elevated lesions.	—

Countries

Asia(except Japan)

Contacts

Public ContactYun Nah Lee

Department of Internal Medicine, Soon Chun Hyang University School of Medicine Digestive Disease Center and Research Institute, Department of Internal Medicine

yunnah@schmc.ac.kr+82-32-621-5094

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026