Clinical N

This input is used for staging

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

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)