Scoring system according to Keren et al50
| Acute inflammation | Crypt changes | Chronic inflammation | |
|---|---|---|---|
| Acute inflammation includes cryptitis, crypt abscesses, and neutrophils in the lamina propria. | |||
| Crypt changes include distortion and/or atrophy. | |||
| Chronic inflammation: mononuclear cells in lamina propria. | |||
| Normal mucosa | 0 | 0 | 0 |
| Active IBD | + | + | + |
| Inactive IBD | 0 | + | + or 0 |
| Reactive mucosa | + or 0 | 0 | + |