Severity of crypt destruction | Grade of injury |
aCrypt lesion | |
Intact crypt | 0 |
Loss of basal third | 1 |
Loss of two thirds | 2 |
Loss of entire crypt | 3 |
Erosion | 4 |
bDamaged area | |
1–25% | 1 |
25–50% | 2 |
50–75% | 3 |
75–100% | 4 |
cInflammation | |
Absent | 0 |
Light | 1 |
Moderate | 2 |
Severe | 3 |
dCrypt distortion | |
Absent | 0 |
Light | 1 |
Moderate | 2 |
Severe | 3 |
Final score: (a × b) + c + d.