Table 3.
AJCC staging systems for primary bone tumors and soft tissue tumors.
| Stage | Surgical site/Topography | Nodal involvement | Metastasis | Histologic grade |
|---|---|---|---|---|
| A) Primary bone tumors | ||||
| IA | T1 | N0 | M0 | low grade |
| IB | T2 | N0 | M0 | low grade |
| IIA | T1 | N0 | M0 | high grade |
| IIB | T2 | N0 | M0 | high grade |
| III | T3 | N0 | M0 | any grade |
| IVA | any T | N0 | M1a | any grade |
| IVB | any T | N1 | M1b | any grade |
| B) Soft tissue tumors | ||||
| IA | T1a/b | N0 | M0 | low grade |
| IB | T2a/b | N0 | M0 | low grade |
| IIA | T1a/b | N0 | M0 | high grade |
| IIB | T2a | N0 | M0 | high grade |
| III | T2b | N0 | M0 | any grade |
| IV | any T | N1 | M0 | any grade |
| IV | any T | any N | M1 | any grade |