Summary Stage 2018: Anus
Summary Stage 2018
Notes
**Anus and Anal Canal**
8000-8700, 8720-8790, 8940-8960, 8965-8983, 9000, 9050-9111, 9270, 9300-9312, 9340-9363, 9380-9539, 9541
C210-C212, C218
C210: Anus, NOS (excluding skin of anus and perianal skin C445)
C211: Anal canal
C212: Cloacogenic zone
C218: Overlapping lesion of rectum, anus and anal canal
**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 21 *Anus*, 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.
* *Anus*, from the AJCC Cancer Staging System Version 9 (2022). Used with permission of the American College of Surgeons, Chicago, Illinois.
**Note 2:** **Other Summary Stage Chapters with Anus sites**
* **GIST**: 8935-8936
* **Kaposi Sarcoma**: 9140
* **Mycosis Fungoides**: 9700-9701
* **Soft Tissue**: 8710-8714, 8800-8934, 8963-8964, 8990-8992, 9010-9045, 9120-9138, 9141-9262, 9271-9290, 9320-9330, 9364-9373, 9540, 9542-9582
| SS2018 |
Description |
| 0 |
**In situ, intraepithelial, noninvasive**
* Anal intraepithelial neoplasia III
* Bowen disease |
| 1 |
**Localized only (localized, NOS)**
* Confined to anus, NOS
* Incidental finding of malignancy in hemorrhoid, NOS
* Intramucosa
* Lamina propria
* Mucosa, NOS
* Muscularis mucosae
* Muscularis propria (internal sphincter)
* Submucosa (superficial invasion) |
| 2 |
**Regional by direct extension only**
* Ischiorectal fat/tissue
* Perianal skin
* Perineum
* Perirectal skin
* Rectal mucosa or submucosa
* Rectal wall
* Skeletal muscle(s)
- Anal sphincter (external)
- Levator ani
* Subcutaneous perianal tissue
* Vulva |
| 3 |
**Regional lymph node(s) involved only**
* Anorectal
* External iliac
* Inferior hemorrhoidal
* Inguinal (femoral) (deep, superficial)
* Internal iliac (hypogastric)
* Lateral sacral (laterosacral)
* Mesorectal
* Obturator
* Perirectal
* Superior rectal (hemorrhoidal) (femoral)
* 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)
- Bladder
- Broad ligament(s)
- Cervix uteri
- Corpus uteri
- Pelvic peritoneum
- Prostate
- Urethra
- Vagina
* Distant lymph node(s), NOS
* Distant metastasis, NOS
- Carcinomatosis
- Distant metastases 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) Welton, M.L., Jessup, J.M., et al. **Anus**. In: Amin, M.B., Edge, S.B., Greene, F.L., et al. (Eds.) AJCC Cancer Staging Manual. 8th Ed. New York: Springer; 2017
(6) **Anus**, from the AJCC Cancer Staging System Version 9 (2022). Used with permission of the American College of Surgeons, Chicago, Illinois.
