Table 1.
Scoring System for Histological Evaluation.
| A | Depth of ulceration |
| 0 | normal morphology of epithelium |
| 1 | partial destruction of mucosa |
| 2 | overall destruction of mucosa |
| 3 | destruction of muscularis mucosa layer |
| 4 | destruction of submucosa |
| B | Area of ulceration |
| 0 | no ulceration |
| 1 | ulceration area < 25% |
| 2 | 25% ≤ ulceration area < 50% |
| 3 | 50% ≤ ulceration area < 75% |
| 4 | 75% ≤ ulceration area |
| C | Edema |
| 0 | no edema |
| 1 | slight |
| 2 | moderate |
| 3 | severe |
| 4 | more severe |
| D | Infiltration |
| 0 | within normal limit |
| 1 | slight |
| 2 | moderate |
| 3 | severe |
| 4 | more severe |