Clinical N

This input is used for staging

Notes

**Note:** Code only regional nodes and nodes, NOS, in this field. Distant nodes are coded in M (distant metastasis).

NAACCR 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 perirectal lymph node(s) Unilateral or bilateral:
Anorectal
Inferior hemorrhoidal
Lateral sacral (laterosacral)
Perirectal

Regional lymph node(s), NOS
Lymph nodes, NOS

Stated as N1
c2 cN2 Metastasis in unilateral internal iliac AND/OR
Unilateral inguinal lymph node(s)
Unilateral:
Internal iliac (hypogastric)
Obturator
Superficial inguinal (femoral)

Stated as N2
c3 cN3 Metastasis in perirectal and inguinal lymph nodes AND/OR
Bilateral internal iliac AND/OR
Bilateral inguinal lymph nodes
Bilateral:
Internal iliac (hypogastric)
Obturator
Superficial inguinal (femoral)

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)