Table 2. Regional Lymph Nodes (N)a
| NX | Regional lymph node(s) cannot be assessed. |
| N0 | No regional lymph node metastasis.b |
| N1 | Metastases in 1–2 regional lymph nodes. |
| N2 | Metastases in 3–6 regional lymph nodes. |
| N3 | Metastases in ≥7 regional lymph nodes. |
| N3a | Metastases in 7–15 regional lymph nodes. |
| N3b | Metastases in ≥16 regional lymph nodes. |
| aReprinted with permission from AJCC: Stomach. In: Edge SB, Byrd DR, Compton CC, et al., eds.: AJCC Cancer Staging Manual. 7th ed. New York, NY: Springer, 2010, pp 117-26. |
| bA designation of pN0 should be used if all examined lymph nodes are negative, regardless of the total number removed and examined. |
