Anal cancer is cancer that start in the anus.<ref>[http://www.cancer.org/cancer/analcancer/detailedguide/anal-cancer-what-is-anal-cancer What is anal cancer? - American Cancer Society]</ref> According to the medical literature, homosexuals and bisexuals are at a significant increased risk for anal cancer. | Anal cancer is cancer that start in the anus.<ref>[http://www.cancer.org/cancer/analcancer/detailedguide/anal-cancer-what-is-anal-cancer What is anal cancer? - American Cancer Society]</ref> According to the medical literature, homosexuals and bisexuals are at a significant increased risk for anal cancer. |