Severity | Circumferential extension |
---|
< 25% | > 25–50% | > 50–70% | > 75% |
---|
0 | 0 | 0 | 0 | 0 |
1 | 1 | 1 | 1 | 1 |
2 | 1 | 1 | 2 | 2 |
3 | 2 | 2 | 3 | 4 |
4 | 2 | 3 | 4 | 4 |
- Severity was defined as: 0 = no inflammation; 1 = rare inflammatory cells present; 2 = mild infiltrate, not being the predominant component of the associated tissue; 3 = moderate infiltrate; 4 = severe circumferential infiltrate (circumferential or near circumferential)