Clinical 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:** Assign N1 if regional lymph nodes are involved but there is no indication of the number of nodes involved. **Note 3:** Assign the appropriate N category based on the number of positive nodes. **Regional lymph nodes for small intestine** **All small intestine sites** Regional lymph nodes, NOS Lymph nodes, NOS **Duodenum primaries only (C170)** Duodenal Gastroduodenal Hepatic Pancreaticoduodenal Pericholodochal (common bile duct) Pyloric: infrapyloric, subpyloric Superior mesenteric **Jejunum primaries only (C171)** Mesenteric, NOS: Superior mesenteric **Ileum primaries only (C172)** Cecal (anterior, posterior, retrocecal) Ileocecal Mesenteric, NOS Superior mesentericNAACCR Item
NAACCR #950Clinical N | Clinical N Display | Description | Registrar Notes |
---|---|---|---|
cX | cNX | Regional lymph nodes 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 | Metastasis in 1-3 regional lymph nodes | Stated as N1 |
c2 | cN2 | Metastasis in 4 or more regional 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) |