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Score of inflammation = grade of inflammation × percentage of involvement, graded out of a maximum score of 8.
| Inflammation Graded | Percentage of Inflammation Involvement of Mucosal Surface Area | Hyperplastic Epithelium—Graded Based on the Extent of Involvement | ||
|---|---|---|---|---|
| 0 | 0 | No inflammation | 0 | None |
| 1 | 1 | 1–25% | 1 | 1–25% |
| 2 | 2 | 26–50% | 2 | 26–50% |
| 3 | 3 | 51–75% | 3 | 51–75% |
| 4 | 4 | 76–100% | 4 | 76–100% |
