Collaborative Stage

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

GISTStomach

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: If information about named regional lymph nodes is available, use codes 110, 400, or 420 rather than code 600.
Note 3: Hepatoduodenal nodes are regional for primaries of the lesser curvature of the stomach. They are coded in CS Mets at DX for all other subsites in this schema.
Note 4: Nodal metastasis is very rare in gastrointestinal stromal tumors 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) in perigastric fat	N1	NA	RN	RN
100	OBSOLETE DATA RETAINED AND REVIEWED V0203 See codes 000, 050, and 110 and CS Mets at DX codes 10 and 50 Regional lymph nodes: Left gastric (superior gastric), NOS: Cardial Cardioesophageal Gastric, left Gastropancreatic, left Lesser curvature Lesser omental Paracardial Pancreaticosplenic (pancreaticolienal) Pancreatoduodenal Perigastric, NOS Peripancreatic Right gastric (inferior gastric), NOS: Gastrocolic Gastroduodenal Gastroepiploic (gastro-omental), right or NOS Gastrohepatic Greater curvature Greater omental Pyloric, NOS Infrapyloric (subpyloric) Suprapyloric Splenic (lienal), NOS: Gastroepiploic (gastro-omental), left Splenic hilar Superior mesenteric Nodule(s) in perigastric fat	N1	NA	RN	RN
110	Regional lymph nodes: Left gastric (superior gastric), NOS: Cardial Cardioesophageal Gastric, left Gastropancreatic, left Lesser curvature Lesser omental Paracardial Pancreaticosplenic (pancreaticolienal) Pancreatoduodenal Perigastric, NOS Peripancreatic Right gastric (inferior gastric), NOS: Gastrocolic Gastroduodenal Gastroepiploic (gastro-omental), right or NOS Gastrohepatic Greater curvature Greater omental Pyloric, NOS Infrapyloric (subpyloric) Suprapyloric Splenic (lienal), NOS: Gastroepiploic (gastro-omental), left Splenic hilar	N1	NA	RN	RN
400	Hepatic (excluding gastrohepatic, [see code 100] and hepatoduodenal [see code 420])	N1	NA	D	RN
420	For lesser curvature: Hepatoduodenal	N1	NA	D	D
500	Regional lymph node(s), NOS	N1	NA	RN	RN
600	Stated as N1 with no other information on regional lymph node	N1	NA	RN	RN
650	OBSOLETE DATA RETAINED V0200 Stated as N2, NOS	ERROR	NA	RN	RN
700	OBSOLETE DATA RETAINED V0200 Stated as N3, NOS	ERROR	NA	RN	RN
800	Lymph nodes, NOS	N1	NA	RN	RN
999	Unknown; regional lymph nodes not stated Regional lymph node(s) cannot be assessed Not documented in patient record	N0	NA	U	U