EOD Primary Tumor

Code Description SS2018 T
000 In situ, intraepithelial, noninvasive (Adeno)carcinoma, noninvasive, in a polyp or adenoma IS
100 Any size tumor Invasive tumor confined to (including polyp [head, stalk, NOS]) - Lamina propria - Mucosa (intramucosal, NOS) - Muscularis mucosae - Submucosa Invasion through - Muscularis propria or muscularis, NOS - Non-peritonealized pericolic tissues - Perimuscular tissue - Subserosa - Transmural, NOS - Wall, NOS Extension to - Cecum Confined to appendix, NOS Confined to muscular wall Polyp, NOS Localized, NOS L
200 Any size tumor with extension to - Adjacent tissue(s), NOS - Connective tissue - Fat, NOS - Ileum - Mesenteric fat - Mesentery - Mesoappendix - Mesocolon - Pericolic fat - Serosa RE
300 Abdominal wall Adherent to other organs or structures, NOS Greater omentum Retroperitoneum (excluding fat) Small intestine RE
700 Adrenal (suprarenal) gland Bladder Diaphragm Fallopian tube Fistula to skin Gallbladder Kidney Liver Other segment(s) of colon/rectum via serosa Ovary Ureter Uterus Further contiguous extension D
800 No evidence of primary tumor U
999 Unknown; extension not stated Primary tumor cannot be assessed Not documented in medical 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 (5) Woltering, E.A., Bergsland, E.K., et al. **Neuroendocrine Tumors of the Appendix**. In: Amin, M.B., Edge, S.B., Greene, F.L., et al. (Eds.) AJCC Cancer Staging Manual. 8th Ed. New York: Springer; 2017 (6) **Neuroendocrine Tumors of the Appendix**, from the AJCC Cancer Staging System Version 9 (2023). Used with permission of the American College of Surgeons, Chicago, Illinois.