Study of usefulness of the demarcation line in magnified endoscopy-combined narrow band imaging (NBI) for determining the expanded area of early-stage differentiated gastric carcinoma

Study of usefulness of the demarcation line in magnified endoscopy-combined narrow band imaging (NBI) for determining the expanded area of early-stage differentiated gastric carcinoma - NBI study for early-stage gastric carcinoma

Status

Active, not recruiting

Phases

Unknown

Study type

Observational

Source

JPRN

Registry ID

JPRN-UMIN000001769

Enrollment

Registered

2009-03-12

Start date

2009-03-01

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

Gastric cancer

Interventions

None listed

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: (a)differenciated gastric carcinoma of the superficial depressed or flat types as determined at standard endoscopy (b)Written informed consent (c)20<= age

Exclusion criteria

Exclusion criteria: (a)Protruded and superficial elevated types (b)Undifferenciated gastric carcinoma (c)The lesions with ulceration (d)Sever concomitant disease (e)Poor condition to obtain appropriate endoscopic images (f)Any other inappropriate condition for participating this study estimated by physician

Design outcomes

Primary

Measure	Time frame
Diagnostic accuracy	—

Secondary

Measure	Time frame
(1)The rate of consistency of the boundary between the cancerous and non-cancerous mucosa(Demarcation Line) on magnified NBI and that identified in the biopsied speciment (2)Sensitivity and specificity	—

Countries

Japan

Contacts

Public ContactKouichi Nonaka

Saitama Medical University International Medical Center Division of Gastroenterology

nonaka@saitama-med.ac.jp042-984-0053

Outcome results