Pathologic N
This input is used for staging
Notes
**Note 1:** Code only regional nodes and nodes, NOS, in this field. Distant nodes are coded in M (distant metastasis). **Note 2:** Regional nodes include unilateral, bilateral or contralateral involvement of named node(s). **Regional lymph nodes** Aortic, NOS Lateral (lumbar) Para-aortic Periaortic Preaortic Retroaortic Interaortocaval Pericaval, NOS Paracaval Precaval Retrocaval Renal hilar Retroperitoneal, NOS **Note 3:** N1 includes single and multiple regional node(s).NAACCR Item
NAACCR #890| Pathologic N | Pathologic N Display | Description | Registrar Notes |
|---|---|---|---|
| pX | pNX | Regional lymph nodes cannot be assessed | Pathologic classification criteria met, evaluation done: Physician unable to assess N Surgical resection primary tumor, no regional lymph nodes removed Involvement of regional lymph nodes not documented Physician assigns pNX, no other information available to determine N |
| p0 | pN0 | No regional lymph node metastasis | |
| p1 | pN1 | Regional lymph node metastasis^ | Single or multiple lymph node(s) Regional lymph nodes, NOS Lymph nodes, NOS Stated as N1 |
| c0 | cN0 | Clinically: No regional lymph node metastasis | Use only for TNM defined pTis cases where there is a resection of the primary and the nodes are not evaluated pathologically |
| 88 | 88 | Not applicable | Primary site/histology not TNM defined In situ case but no pTis is defined by TNM Death certificate only (DCO) case |
| <BLANK> | BLANK | See Registrar Notes | Pathologic classification criteria not met No surgical resection of primary tumor and there isn’t a positive biopsy of a structure in the highest T category and highest N category Evidence of metastatic disease (pM1), no other workup Only Pathologic Stage Group documented (no T, N, or M information available) |