Study of the usefulness of surface pattern observed by magnifying narrow-band imaging(NBI) in early colorectal cacner:Pilot study

Study of the usefulness of surface pattern observed by magnifying narrow-band imaging(NBI) in early colorectal cacner:Pilot study - Surface pattern of early colorectal cancer

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000007709

Enrollment

350

Registered

2012-04-10

Start date

2010-01-01

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 cancer

Interventions

Magnified endoscopy with NBI

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: (1)Early coloretal cancer(intramucosal cancer or submucosal invasive cancer) (2)Lesions observed by magnifying NBI (3)Over 20 years old (4)Written informed consent

Exclusion criteria

Exclusion criteria: (1)Advanced colorectal cancer(T2 or more) (2)Low or high grade adenoma (3)Poor condition to obtain appropriate endoscopic images

Design outcomes

Primary

Measure	Time frame
(1)Diagnostic specifity (2)Diagnostic sensitivity	—

Countries

Japan

Contacts

Public ContactMasashi Misawa

Showa University, Northern Yokohama Hospital Digestive Disease Center

misawaanny@ybb.ne.jp

Outcome results

None listed

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