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| T stage | N stage | M stage | Meta‐analysis stage | AJCC stage |
| 0, 1, 2, X, iS | 0 | 0 | I | I |
| 0, 1, 2, X, iS | 1 | 0 | II | II |
| Any | 2, 3 | 0 | III | III non‐metastatic |
| 3, 4 | Any | 0 | III | III non‐metastatic |
| Any | Any | 1 | IV | Any metastatic |
AJCC = American Joint Committee on Cancer.
