See below:: It is uncommon and has 60-70% five year survival. See this site for more info. http://www.webmd.com/cancer/what-is-anal-cancer.
Answered 11/21/2013
4.7k views
Rare but increasing: Anal cancer is much less common than colorectal cancer, but the rate is increasing in both sexes, due to anal intercourse and infection by human papillomavirus (hpv). Unlike colorectal cancers that are primarily adenocarcinomas, rectal cancers are most squamous cell cancers. The prognosis depends on stage of cancer and early treatment with chemoradiation can retain continence.
Answered 11/21/2013
4.7k views
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