Table 2. Regional Lymph Nodes (N)a
| aReprinted with permission from AJCC: Anus. In: Edge SB, Byrd DR, Compton CC, et al., eds.: AJCC Cancer Staging Manual. 7th ed. New York, NY: Springer, 2010, pp 165-73. | |
| NX | Regional lymph nodes cannot be assessed. |
| N0 | No regional lymph node metastasis. |
| N1 | Metastases in perirectal lymph node(s). |
| N2 | Metastases in unilateral internal iliac and/or inguinal lymph node(s). |
| N3 | Metastases in perirectal and inguinal lymph nodes and/or bilateral internal iliac and/or inguinal lymph nodes. |
