EOD Primary Tumor

This input is used in derivation

Notes

**Note 1:** Code 000 (in situ) is not applicable for this schema. **Note 2:** For this schema, "multifocal" means involvement of multiple sites (codes 500-700).

Default

999

NAACCR Item

NAACCR #772
Code Description SS2018 T
100 Confined to organ, NOS Localized, NOS L
200 Serosa Visceral peritoneum RE
300 Beyond serosa (mesentery) RE
400 Adjacent (connective) tissue, NOS Into tissue beyond organ RE
500 ONE adjacent organ/structure invaded RE
550 Multifocal involvement of TWO sites RE
600 Multifocal involvement of THREE to FIVE sites RE
650 Multifocal involvement of MORE than FIVE sites RE
700 Multifocal involvement, NOS Unknown how many structures involved RE
750 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) Pollock, R.E., Maki, R.G. **Introduction to Soft Tissue Sarcoma**. In: Amin, M.B., Edge, S.B., Greene, F.L., et al. (Eds.) AJCC Cancer Staging Manual. 8th Ed. New York: Springer; 2017 (6) Raut, C.P., Maki, R.G., Pollock, R.E., et al. **Soft Tissue Sarcoma of the Abdomen and Thoracic Visceral Organs**. In: Amin, M.B., Edge, S.B., Greene, F.L., et al. (Eds.) AJCC Cancer Staging Manual. 8th Ed. New York: Springer; 2017