The Evolving Treatment of Anal Cancer
Open Access
- 1 August 2001
- journal article
- research article
- Published by American Medical Association (AMA) in Archives of Surgery
- Vol. 136 (8) , 886-891
- https://doi.org/10.1001/archsurg.136.8.886
Abstract
ANAL CANAL cancer is rare and only accounts for 1% to 6% of all anorectal neoplasms.1 It is important to distinguish anal canal from anal margin neoplasms, as the former are much more aggressive and therefore treated as such. The anatomic landmarks of the anal canal are the anorectal ring proximally and the anal verge distally.2 The anal margin is defined as the perianal skin extending 5 cm out from the anal verge. Most anal canal tumors (squamous, cloacogenic, basaloid, and transitional) behave in similar fashions and are collectively termed epidermoid carcinomas.Keywords
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