Clinical N

This input is used for staging


**Note 1:** Code only regional nodes and nodes, NOS, in this field. Distant nodes are coded in distant metastasis. **Note 2:** Periaortic, pericaval, superior mesenteric artery, and celiac artery lymph nodes are coded to N2.


Clinical N Clinical N Display Description Registrar Notes
cX cNX Regional lymph node(s) cannot be assessed Clinical classification criteria met, evaluation done:
Physician unable to assess N
Regional lymph node involvement cannot be determined or findings inconclusive
Physician assigns cNX, no other information available to determine N
c0 cN0 No regional lymph node metastasis
c1 cN1 Regional lymph node metastasis including: nodes along the cystic duct common bile duct, common hepatic artery and portal vein Regional lymph nodes:
Cystic duct (node of the neck of the gallbladder) (Calot's node)
Hepatic artery
Hilar (in the hepatoduodenal ligament)
Node of the foramen of Winslow (omental) (epiploic)
Pericholedochal (node around common bile duct)
Peripancreatic (near head of pancreas only)
Porta hepatis (portal) (hilar) (in hilus of liver)
Portal vein

Regional lymph node(s), NOS
Lymph nodes, NOS

Stated as N1
c2 cN2 Not defined by UICC* Metastasis to periaortic, pericaval, superior mesenteric artery, and/or celiac artery lymph nodes

Stated as N2
88 88 Not applicable Primary site/histology not TNM defined
Death certificate only (DCO) case
<BLANK> BLANK See Registrar Notes Clinical classification criteria not met
Clinical classification criteria met, evaluation done:
No information about diagnostic workup
Results not documented in record
Tumor first detected on surgical resection (no clinical workup)
Evidence of metastatic disease [(cM1) or (pM1)], no other workup
Only Clinical Stage Group documented (no T, N, or M information available)
\* N2 is not defined by UICC in the 7th edition. Approval has been provided by UICC to use the definition from the AJCC 7th edition, which is documented in the registrar notes.