Table 2.

The criteria for histopathology score.

Score	Scoring Criteria
0	Normal
1	Mild inflammation and edema of the mucosal layer; loss of the basal 1/3 of the crypt.
2	Moderate inflammation of the mucosal layer; loss of the basal 2/3 of the crypt.
3	Moderate inflammation of the mucosal layer with complete disappearance of the crypt, but the epithelial layer is still intact.
4	Heavy inflammation of the mucosal, submucosal, and muscular layers; total disappearance of the crypt and epithelium.