EOD Regional Nodes

Notes

**Note:** Code only regional nodes and nodes, NOS in this field. Distant nodes are coded in EOD Mets.

Code	Description	SS2018 N
000	No regional lymph node involvement	NONE
300	Cecal (anterior, retrocecal, NOS) Cecal (posterior) (terminal ileum only) Ileocecal Mesenteric, NOS Superior mesenteric	RN
400	Large mesenteric masses (greater than 2 cm) Lymph node metastasis greater than 2 cm	RN
800	Regional lymph node(s), NOS Lymph node(s), NOS	RN
999	Unknown; regional lymph node(s) not stated Regional lymph node(s) cannot be assessed Not documented in patient record Death Certificate Only	U

(1) Fritz AG, Ries LAG (eds). **SEER Extent of Disease 1988: Codes and Coding Instructions (3rd Edition, 1998)**, National Cancer Institute, NIH Pub. No. 98-2313, Bethesda, MD, 1998 (2) Young JL Jr, Roffers SD, Ries LAG, Fritz AG, Hurlbut AA (eds.). **SEER Summary Staging Manual-2000: Codes and Coding Instructions**, National Cancer Institute, NIH Pub. No. 01-4969, Bethesda, MD, 2001. (3) Collaborative Stage Work Group of the American Joint Committee on Cancer. **Collaborative Stage Data Collection System User Documentation and Coding Instructions, version 02.05**. American Joint Committee on Cancer (Chicago, IL) (4) Gress, D.M., Edge, S.B., Gershenwald, J.E., et al. **Principles of Cancer Staging**. In: Amin, M.B., Edge, S.B., Greene, F.L., et al. (Eds.) AJCC Cancer Staging Manual. 8th Ed. New York: Springer; 2017: 3-30 (5) Woltering, E.A., Bergsland, E.K., et al. **Neuroendocrine Tumors of the Jejunum and Ileum**. In: Amin, M.B., Edge, S.B., Greene, F.L., et al. (Eds.) AJCC Cancer Staging Manual. 8th Ed. New York: Springer; 2017: 375-387