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| TNM Stage | T stage | N stage | M stage |
|---|---|---|---|
| 0 | Tis | N0 | M0 |
| I | T1 | N0 | M0 |
| II | T0‐1 | N1 | M0 |
| T2 | N0‐1 | M0 | |
| III | T0‐2 | N2 | M0 |
| T3 | N0‐2 | M0 | |
| IVa | T4 | N0‐2 | M0 |
| Any T | N3 | M0 | |
| IVb | Any T | Any N | M1 |
Abbreviations: AJCC, American Joint Committee on Cancer; T, tumor stage; N, nodal stage; M, metastatic stage; UICC, International Union Against Cancer Classification.
