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:** UICC only has a N2, while AJCC has N2a, N2b, and N2c. If a record comes in with N2a, N2b, or N2c, reassign it to N2. N2 and the subcategories of N2 all stage the same way. **Note 3:** Size of the largest metastasis in a lymph node must be known to assign N. You may use a physician’s statement of the N category if this is the only information in the medical record. * If the size of the metastasis is not documented, determine the size of the largest involved lymph node as documented clinically. * If the size of the lymph node(s) cannot be determined, assign N1. * Do not code the size of any node(s) assigned in M (distant metastasis). **Regional lymph nodes** Iliac, NOS: External Internal (hypogastric), NOS: Obturator Inguinal, NOS: Deep inguinal, NOS: Node of Cloquet or Rosenmuller (highest deep inguinal) Superficial inguinal (femoral) Regional lymph node, 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 a single lymph node, 3 cm or less in greatest dimension | IPSILATERAL positive regional lymph node(s), not stated if single or multiple Positive lymph nodes, not stated if ipsilateral, contralateral or bilateral Stated as N1 |
| c2 | cN2 | Metastasis in a single lymph node, more than 3 cm but not more than 6 cm in greatest dimension, or in multiple lymph nodes, none more than 6 cm in greatest dimension* | Multiple ipsilateral lymph nodes, NOS Bilateral or contralateral lymph nodes, NOS Stated as N2 (N2a, N2b, N2c, N2 [NOS]) |
| c3 | cN3 | Metastasis in a lymph node, more than 6 cm in great dimension | Stated as N3 |
| 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) |