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 M (distant metastasis). **Note 2:** Regional nodes include bilateral and contralateral involvement of named nodes. **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)


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 2 cm or less in greatest dimension SINGLE regional lymph node, less than or equal to 2 cm:
Iliac, NOS:
Internal (hypogastric), NOS:
Inguinal, NOS:
Deep inguinal, NOS
Node of Cloquet or Rosenmuller (highest deep inguinal)
Superficial (femoral)
Pelvic, NOS
Sacral, NOS

Size and/or number positive lymph nodes not stated

Regional lymph node, NOS
Lymph nodes, NOS

Stated as N1
c2 cN2 Metastasis in a single lymph node more than 2 cm in greatest dimension, or in multiple lymph nodes SINGLE regional lymph node greater than 2 cm OR
MULTIPLE positive 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)