EOD Primary Tumor

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 Adjacent organ(s)/structure(s), NOS Heart (C380) - Ascending aorta - Parietal pericardium - Vena cava Mediastinum (C381-C383, C388) - Descending aorta - Esophagus - Large (named) artery(ies) or vein(s) - Pericardium (parietal, visceral pericardium, NOS) - Phrenic nerve(s) - Pleura (parietal, visceral, NOS) - Sternum - Sympathetic nerve trunk(s) - Thoracic duct - Thymus - Trachea, parietal pleura - Vertebra(e) Pleura (C384) - Chest wall - Diaphragm - Endothoracic fascia - Heart muscle - Lung involvement, NOS - Mediastinal organs or tissues - Pericardium - Rib RE
550 Multifocal involvement of TWO structures in code 500 RE
600 Multifocal involvement of THREE to FIVE structures in code 500 RE
650 Multifocal involvement of MORE than FIVE sites in code 500 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 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) 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: 489-497 (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: 517-521