Collaborative Stage

Collaborative Stage for TNM 7 - Revised 11/21/2010 [ Schema ]

GISTColon

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: Inferior mesenteric nodes are coded in CS Mets at DX for cecum, ascending colon, transverse colon, and hepatic flexure . Superior mesenteric nodes are coded in CS Mets at DX for all colon sites. Mesenteric node(s), NOS are coded in CS Lymph Nodes.
Note 3: Nodal metastasis is very rare in gastrointestinal stromal tumors (GISTs) 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 Code 100 was defined as "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" in CSv1. Code 100 was defined as "Regional lymph nodes for all colon sites: Colic (NOS), Epicolic (adjacent to bowel wall), Mesocolic (NOS), Paracolic/pericolic" in CSv2:V0201, V0202. All cases should be reviewed and recoded to appropriate codes; see codes 050 and 110. Regional lymph nodes for all colon sites: Colic (NOS) Epicolic (adjacent to bowel wall) Mesocolic (NOS) Paracolic/pericolic	N1	NA	RN	RN
110	Regional lymph nodes for all colon sites: Colic, NOS Epicolic (adjacent to bowel wall) Mesocolic, NOS Paracolic/pericolic	N1	NA	RN	RN
200	OBSOLETE DATA RETAINED AND REVIEWED V0203 See codes 210 and 220 Regional lymph nodes, for specific colon sites: Cecum: Cecal, NOS: Anterior (prececal) Posterior (retrocecal) Ileocolic Right colic Ascending colon: Ileocolic Middle colic Right colic Transverse colon and flexures: Inferior mesenteric for splenic flexure only Left colic for splenic flexure only Middle colic Right colic for hepatic flexure only Descending colon: Inferior mesenteric Left colic Sigmoid colon: Inferior mesenteric Sigmoidal (sigmoid mesenteric) Superior hemorrhoidal Superior rectal	N1	NA	RN	RN
210	Transverse colon and flexures: Inferior mesenteric for splenic flexure only Left colic for splenic flexure only Middle colic Right colic for hepatic flexure only Descending colon: Inferior mesenteric Left colic Sigmoid colon: Inferior mesenteric Sigmoidal (sigmoid mesenteric) Superior hemorrhoidal Superior rectal	N1	NA	RN	RN
220	Regional lymph nodes for descending colon: Sigmoid	N1	NA	D	RN
300	Regional lymph nodes for all colon sites: 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