Summary Stage 2018: Retroperitoneum
Summary Stage 2018
Notes
**Retroperitoneum**
**C480**: 8000-8803, 8810-8921, 8932-8934, 8940-8990, 8992, 9000-9016, 9030-9043, 9045-9138, 9141-9230, 9240-9580, 9582
**C481- C482, C488**: 8710-8714, 8800-8803, 8810-8821, 8823-8921, 8932, 8934, 8940-8941, 8951-8959, 8963-8976, 8981-8990, 8992, 9010-9016, 9030-9043, 9045, 9051, 9053-9055, 9061-9065, 9072, 9081-9084, 9086, 9101-9105, 9120-9138, 9141-9230, 9240-9580, 9582
**C481, C482, C488 and Sex: 1, 9**: 8000-8700, 8720-8790, 8822, 8933, 8950, 8960, 8980, 9000, 9050, 9052, 9060, 9070-9071, 9073, 9080, 9085, 9090-9091, 9100, 9110-9111
C480-C482, C488
C480: Retroperitoneum
C481: Specified parts of peritoneum (including omentum and mesentery)
C482: Peritoneum, NOS
C488: Overlapping lesion of retroperitoneum and peritoneum
**Note 1:** **Sources 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 44 *Soft Tissue Sarcoma of the Retroperitoneum*, 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:** **Other Summary Stage Chapters with Retroperitoneum sites**
* **GIST**: 8935-8936
* **Kaposi Sarcoma**: 9140
* **Mycosis Fungoides**: 9700-9701
* **Primary Peritoneal Carcinoma (C481-C482, C488 and Sex: 2)**: 8000-8700, 8720-8790, 8806, 8822, 8930-8931, 8933, 8950, 8960, 8980, 9000, 9050, 9052, 9060, 9070-9071, 9073, 9080, 9085, 9090-9091, 9100, 9110-9111
* **Soft Tissue**
* **C481-C482, C488 with Sex 1, 9**: 8806, 8930-8931
* 8804-8805, 8991, 9020, 9044, 9231, 9581
**Note 3:** **Not applicable codes**
* Code 0 is not applicable for this chapter.
| SS2018 |
Description |
| 1 |
**Localized only (localized, NOS)**
* Confined to site of origin |
| 2 |
**Regional by direct extension only**
* All sites
- Adjacent connective tissue, NOS
- Adjacent organs/structures, NOS
- Bone/cartilage
* Retroperitoneum (C480)
- Adrenal(s) (suprarenal gland(s))
- Aorta
- Colon (ascending and descending)
- Kidney(s)
- Pancreas
- Vena cava
- Vertebra
* Peritoneum (C481, C482, C488)
- Colon (except ascending and descending colon)
- Esophagus
- Gallbladder
- Liver
- Small intestine
- Spleen
- Stomach |
| 3 |
**Regional lymph node(s) involved only**
* Intra-abdominal
* Paracaval
* Pelvic
* Subdiaphragmatic
* 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)
- Peritoneum (C481, C482, C488)
+ Colon (ascending and descending colon)
* Distant lymph node(s), NOS
* Distant metastasis, NOS
- Carcinomatosis
- Distant mets 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
(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) Pollock, R.E., Maki, R.G., et al. **Soft Tissue Sarcoma of the Retroperitoneum**. In: Amin, M.B., Edge, S.B., Greene, F.L., et al. (Eds.) AJCC Cancer Staging Manual. 8th Ed. New York: Springer; 2017
