Table 2.
Histological scoring criteria.
| Pathological state | Score | |
|---|---|---|
| Gastric mucosal injury | 0 | Intact |
| 1 | Desquamation of epithelial lamina | |
| 2 | Desquamation of superficial lamina propria or 1/3 reduction of gastric glands | |
| 3 | Desquamation of middle lamina propria or 2/3 reduction of gastric glands | |
| 4 | Desquamation of lower lamina propria or >2/3 reduction of gastric glands, even exposure of submucosa | |
| Leukocytes infiltration | 0 | Absent |
| 1 | 2–10/HPF | |
| 2 | 11–20/HPF | |
| 3 | 21–30/HPF | |
| 4 | >31/HPF | |
| Gastric hemorrhage | 0 | Absent |
| 1 | <10% of total area/LPF | |
| 2 | 11–20% of total area/LPF | |
| 3 | 21–30% of total area/LPF | |
| 4 | >30% |
HPF: high power field; LPF: low power field.