EOD Primary Tumor

This input is used for staging

Default

999

NAACCR Item

NAACCR #772

Code	Description	SS2018 T
100	Any size tumor - Confined to site of origin - Localized, NOS	L
200	Any size tumor - Adjacent connective tissue, NOS - Bone/cartilage	RE
500	Central compartment viscera Facial skeleton Orbital invasion Pterygoid muscles Skull base/dural invasion	D
600	Brain parenchymal invasion Carotid artery encasement Central nervous system involvement via perineural spread Prevertebral muscle invasion Further contiguous extension	D
700	Invasion of adjacent organ(s)/structure(s), NOS	RE
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) O'Sullivan, B., Maki, R.G., Pollock, R.E., et al. **Soft Tissue Sarcoma of the Head and Neck**. In: Amin, M.B., Edge, S.B., Greene, F.L., et al. (Eds.) AJCC Cancer Staging Manual. 8th Ed. New York: Springer; 2017