Table 2 Bone sarcoma grading
| Grade 1 | Low-grade central osteosarcoma |
|---|---|
| Parosteal osteosarcoma | |
| Low-grade chondrosarcoma | |
| Clear cell chondrosarcoma | |
| Osteofibrous dysplasia-like adamantinoma | |
| Grade 2 | Periosteal osteosarcoma |
| Intermediate - grade chondrosarcoma | |
| Classic adamantinoma | |
| Chordoma | |
| Grade 3 | Osteosarcoma (conventional, telangieclatic, small cell, secondary, |
| high-grade surface) | |
| Ewing's sarcoma | |
| High-grade chondrosarcoma | |
| Dedifferentiated chondrosarcoma | |
| Mesenchymal chondrosarcoma | |
| Dedifferentiated chordoma | |
| Malignant giant cell tumour |