Table 3 AJCC staging system for bone sarcoma
From: Osteosarcoma: a review of current and future therapeutic approaches
Stage | Grade (G) | Size (T) | Lymph node (N) | Metastasis (M) |
|---|---|---|---|---|
IA | G1—low | T1 < 8 cm | N0—none | M0—none |
IB | G1—low | T2 > 8 cm | N0—none | M0—none |
IIA | G2—high | T1 < 8 cm | N0—none | M0—none |
IIB | G2—high | T2 > 8 cm | N0—none | M0—none |
III | Any G | Any T | Skip metastasis | Skip metastasis |
IVA | Any G | Any T | N0—none | M1—lung metastasis |
IVB | Any G | Any T | N1—lymph node metastasis or N0 | M1—non-lung metastasis |