EOD Regional Nodes
Notes
**Note 1:** Code only regional nodes and nodes, NOS, in this field. Distant nodes are coded in EOD Mets.
**Note 2:** Splenic lymph nodes and those located at the tail of the pancreas are not regional and should be coded in EOD Mets.
**Note 3:** Regional lymph nodes include
Anterior to ampulla of Vater
Inferior to ampulla of Vater
Posterior to ampulla of Vater
Superior to ampulla of Vater
Celiac
Hepatic
Hepatic artery
Lateral aortic (lumbar)
Node of foramen of Winslow (epiploic) (omental)
Pancreaticoduodenal
Peripancreatic (excluding nodes at tail of pancreas)
Periportal (portal vein)
Proximal mesenteric
Pyloric (infrapyloric, subpyloric)
Retroperitoneal
Superior mesenteric
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(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) Herman, J.M., Pawlik, T.M., Vauthey, J.N., et al. **Ampulla of Vater**. In: Amin, M.B., Edge, S.B., Greene, F.L., et al. (Eds.) AJCC Cancer Staging Manual. 8th Ed. New York: Springer; 2017: 327-335