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| Stage | TNM Category | ||
|---|---|---|---|
| Grouping | T | N | M |
| 1A | T1 | N0 | M0 |
| 1B | T2a | N0 | M0 |
| 2A | T1 | N1 | M0 |
| T2a | N1 | M0 | |
| T2b | N0 | M0 | |
| 2B | T2b | N1 | M0 |
| T3 | N0 | M0 | |
| 3A | T1 to T3 | N2 | M0 |
| T3 | N1 | M0 | |
| T4 | N0 or N1 | M0 | |
| 3B | T1 to T4 | N3 | M0 |
| T4 | N2 | M0 | |
| 4 | T1 to T4 | N1 to N3 | M1 |
Stage grouping for Non-Small Cell Lung Cancer based on TNM category [41].
