EOD Primary Tumor

This input is used for staging


**Note 1:** High grade dysplasia and severe dysplasia of the small intestine are generally not reportable in cancer registries. * Code 000 if your registry collects these tumors **Note 2:** Code depth of invasion in preference to intraluminal spread or lateral extension to adjacent segment(s) of small intestine or cecum.




Code Description SS2018 T
000 In situ, intraepithelial, noninvasive (Adeno)carcinoma, noninvasive, in a polyp or adenoma IS
100 Intramucosa, NOS Lamina propria Mucosa, NOS Muscularis mucosae L
200 Submucosa (superficial invasion) L
250 Confined to polyp (head, stalk, NOS) Intraluminal spread to other segments of small intestine or cecum Confined to small intestine, NOS Localized, NOS L
300 Muscularis propria L
400 Extension through wall, NOS Subserosal tissue/(sub)serosal fat invaded Through muscularis propria or muscularis, NOS Transmural, NOS Wall, NOS L
500 Adjacent (connective) tissue(s), NOS (without serosal penetration) Fat, NOS Mesenteric fat Mesentery (adjacent loops of bowel) Nonperitonealized perimuscular tissue Retroperitoneum RE
600 Abdominal wall (via serosa) Adjacent organ(s)/structure(s) Mesothelium Other loops of small intestine Other segments of small intestine (via serosa) Serosa Tunica serosa Visceral peritoneum Duodenum (C170) - Ampulla of Vater - Blood vessel(s), major + Aorta + Gastroduodenal artery + Portal vein + Renal vein + Superior mesenteric artery or vein + Vena cava - Diaphragm - Extrahepatic bile duct(s) - Gallbladder - Hepatic flexure - Kidney (right or NOS) - Liver (quadrate lobe, right lobe or NOS) - Omentum - Pancreas (pancreatic duct) - Stomach - Transverse colon - Ureter, right Jejunum and Ileum (C171, C172) - Colon including appendix RE
700 Jejunum and Ileum (C171, C172) - Bladder - Fallopian tube(s) - Ovary(ies) - 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 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) Coit, D.G., Kelsen, D., Hofstetter, W.L., et al. **Small Intestine**. In: Amin, M.B., Edge, S.B., Greene, F.L., et al. (Eds.) AJCC Cancer Staging Manual. 8th Ed. New York: Springer; 2017: 221-234