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 as regional node metastases when there are metastatic nodules in the fat adjacent to a gastric carcinoma WITHOUT evidence of residual lymph node tissue; assign as M (distant metastases) for nodules implanted on peritoneal surfaces. **Regional lymph nodes** Celiac Hepatic Hepatoduodenal (for lesser curvature) Left gastric (superior gastric), NOS Cardial Cardioesophageal Gastric, left Gastropancreatic, left Lesser curvature Lesser omental Paracardial Nodule(s) in perigastric fat Pancreaticosplenic (pancreaticolienal) Pancreaticoduodenal Perigastric, NOS Peripancreatic Right gastric (inferior gastric), NOS Gastrocolic Gastroduodenal Gastroepiploic (gastro-omental), right or NOS Gastrohepatic Greater curvature Greater omental Pyloric, NOS: infrapyloric, subpyloric, suprapyloric Splenic (lienal), NOS Gastroepiploic (gastro-omental), left Splenic hilar Regional lymph nodes, NOS Lymph nodes, NOSNAACCR Item
NAACCR #950| Clinical 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 1-2 regional lymph nodei | Stated as N1 |
| c2 | cN2 | Metastasis in 3-6 regional lymph nodes | Stated as N2 |
| c3 | cN3 | Metastasis in 7 or more regional lymph nodes | Note: N3 has subcategories of N3a and N3b. Assign N3 only when there is no information available to assign one of the subcategories Stated as N3 [NOS] |
| c3A | cN3a | Metastasis in 7-15 regional lymph nodes | Stated as N3a |
| c3B | cN3b | Metastasis in 16 or more regional lymph nodes | Stated as N3b |
| 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) |