EOD Primary Tumor

This input is used for staging

Notes

**Note:** Code 300 If there is fixation of hemilarynx or larynx.

Default

999

NAACCR Item

NAACCR #772
Code Description SS2018 T
000 In situ, intraepithelial, noninvasive IS
100 Any size tumor confined to one site WITHOUT fixation - Laryngopharynx - Postcricoid area - Posterior pharyngeal wall - Pyriform sinus Confined to hypopharynx Localized, NOS L
150 Any size tumor confined to more than one subsite in code 100 - WITHOUT fixation L
200 Any size tumor with extension to - Hemilarynx WITHOUT fixation - Oropharynx WITH or WITHOUT fixation Any structure listed in code 100 with fixation RE
300 Esophagus Fixation of hemilarynx or larynx RE
400 Central compartment soft tissues of neck including - Prelaryngeal strap muscle(s) - Subcutaneous fat Cricoid cartilage Esophagus Extrinsic muscle of tongue Fixation of oropharynx Hard palate Hemilarynx Mandible Medial pterygoid Oropharynx Prevertebral fascia/muscle(s) Soft tissues of neck Thyroid cartilage/gland RE
500 Hyoid bone D
600 Carotid artery (encased) RE
700 Base of tongue Floor of tongue Mediastinal structure(s) Nasopharynx 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) Lydiatt, W.M., Patel, S.G., Shah, J.P., et al. **Staging Head and Neck Cancers**. In: Amin, M.B., Edge, S.B., Greene, F.L., et al. (Eds.) AJCC Cancer Staging Manual. 8th Ed. New York: Springer; 2017: 55-65 (6) Lydiatt, W.M., Ridge, J.A., Shah, J.P., et al. **Oropharynx (p16-) and Hypopharynx**. In: Amin, M.B., Edge, S.B., Greene, F.L., et al. (Eds.) AJCC Cancer Staging Manual. 8th Ed. New York: Springer; 2017: 123-135