EOD Primary Tumor

Notes

**Note 1:** Uveal melanomas arise most commonly in the choroid, less frequently in the ciliary body, and least often in the iris. Melanomas of the iris tend to be small, and those arising from or extending to the ciliary body typically are large. **Note 2:** Primary ciliary body and choroidal melanomas are classified according to four tumor size categories. The tumor size categories are based on the largest basal and thickness. * Basal diameter is collected in data item *Measured Basal Diameter* [NAACCR Date Item #3887] * Thickness is collected in the data item *Measured Thickness* [NAACCR Data Item #3888]
Code Description SS2018 T
000 In situ: intraepithelial, noninvasive IS
100 Any tumor size category - UNKNOWN if ciliary body involvement OR extraocular extension Localized, NOS L
200 Any tumor size category - WITHOUT ciliary body involvement AND extraocular extension L
300 Any tumor size category - WITH ciliary body involvement L
400 Any tumor size category - WITH extraocular extension less than or equal to 5 mm in largest diameter - NONE or UNKNOWN if ciliary body involvement RE
500 Any tumor size category - WITH ciliary body involvement - AND extraocular extension less than or equal to 5 mm in largest diameter RE
600 Extraocular extension GREATER than 5 mm RE
700 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) Kivelä, T., Finger, P.T., et al. **Uveal Melanoma**. In: Amin, M.B., Edge, S.B., Greene, F.L., et al. (Eds.) AJCC Cancer Staging Manual. 8th Ed. New York: Springer; 2017: 805-817