Early stage colorectal cancer (Tis/T1a/T1b) receiving colonoscoppy between 2016 Jan. and 2018 Dec.
Conditions
Interventions
None listed
Sponsors
Eligibility
Inclusion criteria
Inclusion criteria: 1) Consecutive series of Tis/T1a/T1b stage colorectal cancer endoscopically observed between 2016 Jan and 2018 December. 2) Non-magnified plain still images (3-5 shots)
Exclusion criteria
Exclusion criteria: 1) Pedunculated morphology 2) Huge lesion, >5cm in size 3) Chromoendoscopic images 4) Images enhanced by NBI, BLI etc.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Specificity for T1b colorectal cancer | — |
Secondary
| Measure | Time frame |
|---|---|
| Sensitivity, PPV, NPV and overall accuracy for T1b colorectal cancer | — |
Countries
Japan
Contacts
Aizu Medical Center Fukushima Medical University Dept. of Coloproctology