Criteria for microscopic scoring of colonic damage
| Parameter | Score |
|---|---|
| Ulceration | |
| No | 0 |
| Minor | 1 |
| Major | 2 |
| Inflammation | |
| None | 0 |
| Minor | 1 |
| Major | 2 |
| Severe | 3 |
| Depth of lesion | |
| None | 0 |
| Superficial | 1 |
| One third | 2 |
| Two thirds | 3 |
| Transmural | 4 |
| Fibrosis | |
| None | 0 |
| Minor | 1 |
| Major | 2 |
| Lymphocyte infiltration | |
| No | 0 |
| Yes | 1 |
| Total score | 0–12 |