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N category in the TNM staging system
| 6th edition | 7th edition | 8th edition | |||
|---|---|---|---|---|---|
| N stage | |||||
| Nx | Nx | Nx | |||
| N0 | N0 | N0 | |||
| N1 | 1–3 metastatic nodes | N1a | 1 metastatic node | N1a | 1 metastatic node |
| N2 | 4 or more metastatic nodes | N1b | 2–3 metastatic nodes | N1b | 2–3 metastatic nodes |
| N1c | TDs | N1c | TDs | ||
| N2a | 4–6 metastatic nodes | N2a | 4–6 metastatic nodes | ||
| N2b | 7 or more metastatic nodes | N2b | 7 or more metastatic nodes |
TD, tumor deposit.
