Table 7. FNCLCC Histologic Grading System
| FNCLCC = Fédération Nationale des Centres de Lutte Contre Le Cancer; HPF = high-power field. | |
| Tumor Differentiation | |
| Score 1 | Sarcoma closely resembling normal adult mesenchymal tissue (e.g., well-differentiated liposarcoma) |
| Score 2 | Sarcomas for which histologic typing is certain (e.g., myxoid liposarcoma) |
| Score 3 | Embryonal and undifferentiated sarcomas, sarcomas of doubtful type, and synovial sarcomas |
| Mitotic Count | |
| Score 1 | 0–9 mitoses per 10 HPF |
| Score 2 | 10–19 mitoses per 10 HPF |
| Score 3 | ≥20 mitoses per 10 HPF |
| Tumor Necrosis | |
| Score 0 | No necrosis |
| Score 1 | <50% tumor necrosis |
| Score 2 | ≥50% tumor necrosis |
