Collaborative Stage

Collaborative Stage for TNM 7 - Revised 11/13/2010 [ Schema ]

CS Lymph Nodes

Note 1: Code only regional nodes and nodes, NOS in this field. Distant nodes are coded in CS Mets at DX.
Note 2: Superior and inferior mesenteric nodes are coded in CS Mets at DX. Mesenteric nodes, NOS are coded in CS Lymph Nodes.
Note 3: Nodal metastasis is very rare in gastrointestinal stromal tumors (GIST), and surgeons generally agree that nodal dissection is not indicated. In the absence of information on regional lymph node status, N0 is appropriate; code 999 is mapped to N0 accordingly.

Code	Description	TNM 7 Map	TNM 6 Map	SS77 Map	SS2000 Map
000	No regional lymph node involvement	N0	NA	NONE	NONE
050	Nodule(s) or foci in pericolic fat/adjacent mesentery/mesocolic fat	N1	NA	RN	RN
100	OBSOLETE DATA RETAINED AND REVIEWED V0203 See codes 050 and 110 Regional lymph nodes for all colon sites: Colic (NOS) Epicolic (adjacent to bowel wall) Mesocolic (NOS) Paracolic/pericolic Nodule(s) or foci in pericolic fat/adjacent mesentery/mesocolic fat	N1	NA	RN	RN
110	Colic, NOS Epicolic (adjacent to bowel wall) Mesocolic, NOS Paracolic/pericolic	N1	NA	RN	RN
200	Cecal: Anterior (prececal) Cecal, NOS Posterior (retrocecal) Ileocolic Right colic	N1	NA	RN	RN
300	Mesenteric, NOS Regional lymph node(s), NOS	N1	NA	RN	RN
400	Stated as N1 with no other information on regional lymph nodes	N1	NA	RN	RN
450	OBSOLETE DATA RETAINED V0200 Stated as N2 pathologic	ERROR	NA	RN	RN
800	Lymph nodes, NOS	N1	NA	RN	RN
999	Unknown; regional lymph nodes not stated Regional lymph nodes cannot be assessed Not documented in patient record	N0	NA	U	U