Criteria for assessment of colonic damage
| Macroscopic Score | |
|---|---|
| Adhesions | |
| None | 0 |
| Minimal | 1 |
| Involving several bowel loops | 2 |
| Strictures | |
| None | 0 |
| Mild | 2 |
| Severe, proximal dilatation | 3 |
| Ulcers | |
| None | 0 |
| Linear ulceration <1 cm | 1 |
| Two linear ulcers <1 cm | 2 |
| More sites of ulceration or one large ulcer >1 cm | 3 |
| Wall thickness | |
| Less than 1 mm | 0 |
| 1–3 mm | 1 |
| More than 3 mm | 2 |
| Maximum score | 10 |
| Microscopic Score1-a | |
|---|---|
| Ulceration | |
| No ulcer, epithelisation | 0 |
| Small ulcers <3 mm | 1 |
| Large ulcers >3 mm | 2 |
| Inflammation | |
| None | 0 |
| Mild | 1 |
| Moderate | 2 |
| Severe | 3 |
| Depth of the lesion | |
| None | 0 |
| Submucosa | 1 |
| Muscularis propria | 2 |
| Serosa | 3 |
| Maximum score | 8 |
↵1-a The criteria of Vilaseca et al. (1984) was modified from a maximum score of 10 to that of 8, which hasn't the fibrogenesis involved, because there was no fibrogenesis showing at 1 week after the colitis. Furthermore, the inflammation was evaluated by infiltration of inflammatory cells on a scale of 0 to 3, which was described by Zipser et al. (1987).