Summary Stage 2018: Placenta

Summary Stage 2018

Notes

**Placenta** 8000-8700, 8720-8790, 9100-9105, 9700-9701 C589 C589 Placenta **Note 1:** The following sources were used in the development of this chapter * SEER Extent of Disease 1988: Codes and Coding Instructions (3rd Edition, 1998) (https://seer.cancer.gov/archive/manuals/EOD10Dig.3rd.pdf) * SEER Summary Staging Manual-2000: Codes and Coding Instructions (https://seer.cancer.gov/tools/ssm/ssm2000/) * Collaborative Stage Data Collection System, version 02.05: https://cancerstaging.org/cstage/Pages/default.aspx * Chapter 56 *Gestational Trophoblastic Neoplasms*, in the AJCC Cancer Staging Manual, Eighth Edition (2017) published by Springer International Publishing. Used with permission of the American College of Surgeons, Chicago, Illinois. **Note 2:** See the following chapters for the listed histologies * 8710-8714, 8800-8934, 8940-9091, 9110-9137, 9141-9582: *Soft Tissue* * 8935-8936: *GIST* * 9140: *Kaposi Sarcoma* **Note 3:** If a trophoblastic tumor is not associated with a pregnancy and arises in another site, such as ovary, use the primary site code and the appropriate Summary Stage chapter.

NAACCR Item

NAACCR #764
SS2018 Description
0 In situ, intraepithelial, noninvasive
1 Localized only (localized, NOS) - FIGO Stage I + Confined to placenta
2 Regional by direct extension only - FIGO Stage II + Adjacent connective tissue, NOS + Cervix + Corpus uteri + Other genital structure(s) by DIRECT EXTENSION or NOS * Broad ligament * Fallopian tube(s) * Genital structure(s), NOS * Ovary(ies) * Vagina + Uterus, NOS
3 Regional lymph node(s) involved only - Aortic, NOS + Lateral (lumbar) + Para-aortic + Peri-aortic - Iliac, NOS + Common + External + Internal (hypogastric), NOS * Obturator - Parametrial - Pelvic, NOS - Sacral + Lateral (laterosacral) + Middle (promontorial) (Gerota's node) + Presacral + Uterosacral - Regional lymph node(s), NOS + Lymph node(s), NOS
4 Regional by BOTH direct extension AND regional lymph node(s) involved - Codes (2) + (3)
7 Distant site(s)/lymph node(s) involved - Distant site(s) (including further contiguous extension) + Other genital structure(s) by METASTASIS * Broad ligament * Cervix uteri * Corpus uteri * Fallopian tube(s) * Genital structure(s), NOS * Ovary(ies) * Uterus, NOS * Vagina - Distant lymph node(s), NOS + Superficial inguinal (femoral) - Distant metastasis, NOS + Carcinomatosis + Distant metastasis WITH or WITHOUT distant lymph node(s)
9 Unknown if extension or metastasis
(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) **Introduction to Female Reproductive Organs**. In: Amin, M.B., Edge, S.B., Greene, F.L., et al. (Eds.) AJCC Cancer Staging Manual. 8th Ed. New York: Springer; 2017: 631 (6) Chen, L., Olawaiye, A.B., Mutch, D.G., et al. **Gestational Trophoblastic Neoplasms**. In: Amin, M.B., Edge, S.B., Greene, F.L., et al. (Eds.) AJCC Cancer Staging Manual. 8th Ed. New York: Springer; 2017: 691-697