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Anal Cancer Treatment (PDQ®) - General Information
Note: Estimated new cases and deaths from anal cancer in the United States in 2008:[1]
- New cases: 5,070.
- Deaths: 680.
Anal cancer is usually curable. The three major prognostic factors are site (anal canal vs. perianal skin), size (primary tumors <2 cm in size have better prognoses), and nodal status.
Anal cancer is an uncommon malignancy and accounts for only a small percentage (4%) of all cancers of the lower alimentary tract. Clinical trials such as E-7283R, for example, have evaluated the roles of chemotherapy, radiation therapy, and surgery in the treatment of this disease.[2,3] Information about ongoing clinical trials is available from the NCI Web site.
Overall, the risk of anal cancer is rising, with data suggesting that persons engaging in certain sexual practices, such as receptive anal intercourse, or persons with a high lifetime number of sexual partners are at increased risk of anal cancer. These practices may have led to an increase in the number of individuals at risk for infection with human papillomavirus (HPV); HPV infection is strongly associated with anal cancer development and may be a necessary step in its carcinogenesis.[4,5,6,7]
References:
- American Cancer Society.: Cancer Facts and Figures 2008. Atlanta, Ga: American Cancer Society, 2008. Also available online. Last accessed October 1, 2008.
- Martenson JA, Lipsitz SR, Lefkopoulou M, et al.: Results of combined modality therapy for patients with anal cancer (E7283). An Eastern Cooperative Oncology Group study. Cancer 76 (10): 1731-6, 1995.
- Fuchshuber PR, Rodriguez-Bigas M, Weber T, et al.: Anal canal and perianal epidermoid cancers. J Am Coll Surg 185 (5): 494-505, 1997.
- Johnson LG, Madeleine MM, Newcomer LM, et al.: Anal cancer incidence and survival: the surveillance, epidemiology, and end results experience, 1973-2000. Cancer 101 (2): 281-8, 2004.
- Daling JR, Weiss NS, Hislop TG, et al.: Sexual practices, sexually transmitted diseases, and the incidence of anal cancer. N Engl J Med 317 (16): 973-7, 1987.
- Palefsky JM, Holly EA, Gonzales J, et al.: Detection of human papillomavirus DNA in anal intraepithelial neoplasia and anal cancer. Cancer Res 51 (3): 1014-9, 1991.
- Ryan DP, Compton CC, Mayer RJ: Carcinoma of the anal canal. N Engl J Med 342 (11): 792-800, 2000.
WebMD Public Information from the National Cancer Institute
This information is produced and provided by the National Cancer Institute (NCI). The information in this topic may have changed since it was written. For the most current information, contact the National Cancer Institute via the Internet web site at http://cancer.gov or call 1-800-4-CANCER
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