Pathologic N

This input is used for staging


**Note:** Code only regional nodes and nodes, NOS, in this field. Distant nodes are coded in M (distant metastasis). **Regional lymph nodes** Aortic (above diaphragm), NOS Peri/para-aortic, NOS Ascending aorta (phrenic) Subaortic (aortico-pulmonary window) Carinal (tracheobronchial) (tracheal bifurcation) Mediastinal, NOS Anterior Posterior (tracheoesophageal) Pericardial Peri/paraesophageal Peri/paratracheal, NOS Azygos (lower peritracheal) Pre- and retrotracheal, NOS Precarinal Pulmonary ligament Subcarinal


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 Regional lymph node(s), 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
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)