EOD Primary Tumor
Notes
**Note 1:** When both the Federation Internationale de Gynecologie et d'Obstetrique (FIGO) stage and extension information on the primary tumor are available, use the extension information to assign the code in preference to a statement of FIGO stage.
**Note 2:** Peritoneal implants may also be called seeding, salting, talcum powder appearance, or studding.
**Note 3:** A tumor confined to the peritoneum (code 300) is when there is one pelvic peritoneal tumor, or multiple pelvic peritoneal tumors, without any mention of implants on the specific pelvic/abdominal structures listed in codes 400-750.
**Note 4:** Both extension to and/or discontinuous metastasis to any of the following pelvic organs are included in code 450: Adnexa, NOS; bladder and bladder serosa; broad ligament (mesovarium); cul de sac; parametrium; pelvic peritoneum; pelvic wall; rectosigmoid; rectum; sigmoid colon; sigmoid mesentery; pelvic ureter.
**Note 5:** If implants are mentioned, determine whether they are in the pelvis or in the abdomen and code appropriately. If the location of the implants is not specified, code 750.
**Note 6:** Both extension to and/or discontinuous metastasis to any of the following abdominal organs by way of peritoneal seeding or implants are included in codes 600-750
* Abdominal mesentery; diaphragm; gallbladder; infracolic omentum; kidneys; large intestine except rectum, rectosigmoid, and sigmoid colon; liver (peritoneal surface); omentum; pancreas; pericolic gutter; peritoneum, NOS; small intestine; spleen (capsular involvement only); stomach; and ureters outside pelvis
**Note 7:** Direct extension and/or metastasis to the liver or splenic parenchyma are coded in EOD Mets.
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(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)
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(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) Prat, J., Olawaiye, A.B., Mutch, D.G., et al. **Ovary, Fallopian Tube, and Primary Peritoneal Carcinoma**. In: Amin, M.B., Edge, S.B., Greene, F.L., et al. (Eds.) AJCC Cancer Staging Manual. 8th Ed. New York: Springer; 2017: 681-690