Table 2.
| Criteria | Histological type | ||
|---|---|---|---|
| Benign | Borderline | Malignant | |
| Tumor margins | Pushing | ↔ | Infiltrative |
| Stroma cellularity | Low | Moderate | High |
| Mitotic rate (per 10 hpf) | <5 | 5–9 | ≥10 |
| Pleomorphism | Mild | Moderate | Severe |
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