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Proposed surveillance schedule for patients with bone sarcoma stratified according to rates of metastatic progression by grade and diagnosis
| Grade | 0–2 years | 2–5 years | 5–10 years |
|---|---|---|---|
| Low grade (Grade 1) | 12 months | None | |
| Intermediate grade (Grade 2 excluding OSA) | 3 months | 12 months | |
| High grade (Grade 2 OSA and Grade 3) | 3 months | 6 months | 12 months |
OSA = osteosarcoma.
