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). **Regional lymph nodes** **All sites** Hemorrhoidal (middle, superior) Inferior mesenteric Mesenteric [NOS] Perirectal Rectal (middle) Rectal [NOS] Rectal (superior) Rectosigmoid (paracolic/pericolic) Sigmoidal (sigmoid mesenteric) Regional lymph nodes, NOS Lymph nodes, NOS **Rectosigmoid (C199)** Colic, (NOS) Left colic **Rectum (C209)** Hemorrhoidal (inferior) Internal iliac (hypogastric) Lateral (laterosacral) Middle (promontorial) (Gerota's node) Obturator Presacral Rectal (inferior) Sacral (NOS) Sacral promontory

NAACCR Item

NAACCR #950

Clinical N	Clinical N Display	Description	Registrar Notes
cX	cNX	Regional lymph node(s) 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	Regional lymph node metastasis	Nodule(s) or foci in perirectal fat Regional lymph nodes, NOS Lymph nodes, NOS Stated as N1
88	88	Not applicable	In situ case but no pTis is defined by TNM 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)