Efficacy of conventional endoscopy using non-extension sign for optical diagnosis of colorectal epitherial neoplasms

Not Applicable

• Conditions: colorectal epithelial neoplasm

• Registration Number: JPRN-UMIN000033989
• Lead Sponsor: Department of Gastroenterology, Fukuoka University Chikushi Hospital

Brief Summary

Not available

Detailed Description

Not available

Study Timeline

• Results First Posted: 1900-01-01
• Study Start: 2018-09-01
• Study Completion: 2020-07-31
• Last Update Posted: 17 October 2023

Recruitment & Eligibility

• Status: Pending
• Sex: All
• Target Recruitment: 500

Inclusion Criteria

Not provided

Exclusion Criteria

1. Pedunculated-type lesion 2. Serrated lesion 3. Lesions that are difficult to assess because observation conditions are poor. 4. Impossible pathological evaluation 5. Cases are inflammatory bowel disease, colitis-associated colorectal cancer, advanced cancer, after colon resection, familial adenomatous polyposis. 6. Patients with serious complication. 7. Patients who were judged inappropriate by their physicians.

Study & Design

• Study Type: Observational
• Study Design: Not specified

Primary Outcome Measures

Name	Time	Method
The sensitivity, specificity, positive predictive value, negative predictive value, and accuracy of each modality in diagnosing SM-deep cancer in adenoma and early colorectal caner with non-extension sign as an index for the diagnosis of SM-deep cancer.

Secondary Outcome Measures

Name	Time	Method
1.Comparing the accuracy of conventional endoscopy using non-extension sign, magnifying narrow-band imaging, and magnifying chromoendoscopy for optical diagnosis. 2.Others, evaluate all the various result.