Table 2 Gross morphological damage score criteria for colonic tissue by naked eye
Gross morphology | Score |
|---|---|
No hyperemia, edema, and ulcers | 0 |
Only mucous erythema | 1 |
Mild mucosal edema, slight bleeding | 2 |
Moderate edema, hemorrhagic ulcer, erosion | 3 |
Severe ulcers, erosions, edema | 4 |