colorectal polyp
Conditions
Interventions
None listed
Sponsors
SHOWA MEDICAL UNIVERSITY
Eligibility
Sex/Gender
All
Inclusion criteria
Inclusion criteria: Patient Inclusion Criteria Patients who underwent resection of colorectal polyps less than 10 mm that were imaged at the Gastroenterology Center of Showa University Northern Yokohama Hospital between July 1, 2021, and January 31, 2022. Patients who did not express refusal to participate in this study. Patients aged over 20 years at the time of examination. Physician Inclusion Criteria Physicians working at the Gastroenterology Center of Showa University Northern Yokohama Hospital during the period from the date of approval indicated in the ethics review approval letter issued by the Ethics Committee for Research Involving Human Subjects at Showa University, after obtaining permission to conduct the study from the head of the institution, until December 31, 2024.
Exclusion criteria
Exclusion criteria: <Patient Exclusion Criteria> Absence of NBI images. NBI images are unclear and the lesion cannot be recognized. Only images containing multiple lesions are available. Lesions obtained from patients with inflammatory bowel disease. Lesions obtained from patients with polyposis. <Physician Exclusion Criteria> Physicians not working at the Gastroenterology Center of Showa University Northern Yokohama Hospital. Physicians deemed ineligible at the discretion of the investigators. Discontinuation Criteria The study will be discontinued for a participant if any of the following conditions apply during participation: A request for withdrawal is made by the participant (or their legally authorized representative). The study is interrupted due to participant-related circumstances (e.g., relocation, transfer to another hospital, busy schedule, or loss to follow-up). The participant is found to be ineligible after study initiation. An incidental accident occurs. An adverse event occurs (including worsening of the primary disease, exacerbation of comorbidities, or complications), and the investigator determines that discontinuation is necessary. Continuation of the study becomes difficult due to insufficient effect or worsening of symptoms. A major deviation from the study protocol occurs, rendering evaluation impossible. Any other reason for which the investigator judges that continuation of the study is inappropriate.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Time required for the diagnosis of colorectal polyps | — |
Secondary
| Measure | Time frame |
|---|---|
| Sensitivity, specificity, accuracy, positive predictive value, and negative predictive value of endoscopists for neoplastic lesions. Proportion of lesions that endoscopists were able to diagnose with high confidence. | — |
Countries
Japan
Contacts
Public ContactYUTARO IDE
SHOWA MEDICAL UNIVERSITY NORTHERN YOKOHAMA HOSPITAL DIGESTIVE DISEASE CENTER
Outcome results
None listed