Clinical N
This input is used in derivation
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 for Stomach are:** 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 |
| <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) |