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Histological score parameters.
| Epithelium (E) | Infiltration (I) | ||
|---|---|---|---|
| 0 | Normal morphology | 0 | No infiltrate |
| 1 | Loss of epithelial cells | 1 | Infiltrate around crypt basis |
| 2 | Loss of epithelial cells in large areas | 2 | Infiltrate reaching to L. muscularis mucosae |
| 3 | Loss of crypts | 3 | Extensive infiltration reaching the L. muscularis mucosae and thickening of the mucosa with abundant oedema |
| 4 | Loss of crypts in large areas | 4 | Infiltration of the L. submucosa |
