Case Report
Malignant Phyllodes Tumor in an Adolescent Female: A Rare Case Report and Review of the Literature
Table 2
Grading system for phyllodes tumors based on 2012 World Health Organization classification.
| Histologic features | Histological type | Benign | Borderline | Malignant |
| Stromal cellularity | Mild | Moderate | Marked | Stromal atypia | Mild | Moderate | Marked | Mitosis (per 10 HPF) | <5 | 9-may | ≥10 | Stromal overgrowth | Absent | Absent or focal | Present | Tumor margin | Clear | Clear or infiltration | Infiltration |
|
|
HPF: high-power field. Table adopted with permissions from Zhang and Kleer [ 34]. |