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 lymph nodes for the bladder are the nodes of the true pelvis, which essentially are the pelvic nodes below the bifurcation of the common iliac arteries, but include the lymph nodes along the common iliac artery too. Laterality does not affect the N classification. **Regional lymph nodes** N1 (single) or N2 (multiple): Lymph nodes in the true pelvis Perivesical Iliac Internal (hypogastric) Obturator External Iliac, NOS Sacral (lateral, presacral, sacral promontory (Gerota's), or NOS) Pelvic, NOS Regional lymph nodes, NOS Lymph nodes, NOS N3:Single or multiple Common iliac lymph node(s)


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 in the true
External iliac
Not stated if single or multiple

Stated as N1
c2 cN2 Metastasis in multiple lymph nodes in the true pelvis:
External iliac
MULTIPLE regional lymph nodes

Stated as N2
c3 cN3 Metastasis in a common iliac lymph node(s) Common iliac lymph node(s)

Stated as N3
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)