Clinical nodal staging for HPV-related OPSCCa
| N Category | N Criteria |
|---|---|
| Nx | Regional lymph nodes cannot be assessed |
| N0 | No regional lymph node metastasis |
| N1 | One or more ipsilateral lymph nodes, none larger than 6 cm |
| N2 | Contralateral or bilateral lymph nodes, none >6 cm |
| N3 | Lymph node(s) >6 cm |
↵a The HPV-related OPSCC nodal staging shows a dramatic change compared with the eighth edition non-HPV OPSCC staging. Table adapted with permission of the American Joint Committee on Cancer, Chicago, Illinois. The original source for this material is the AJCC Cancer Staging Manual.1