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AJJC N staging for gastric cancer.
| Nx | Regional lymph nodes cannot be assesed |
| N0 | No regional lymph node metastases |
| N1 | Metastasis in 1–2 regional lymph nodes |
| N2 | Metastasis in 3–6 regional lymph nodes |
| N3 | Metastasis in 7 or more regional lymph nodes |
| N3a | Metastasis in 7–15 regional lymph nodes |
| N3b | Metastasis in 16 or more regional lymph nodes |
