Colon cancer is caused by anal sex with an infected person, thus anal warts appear which if not treated and removed will morph into Crohn's disease, proctitis and proctocolitis. 34491-6/pdf).
Colon cancer is caused by anal sex with an infected person, thus anal warts appear which if not treated and removed will morph into Crohn's disease, proctitis and proctocolitis. [ColoRectalSTD's pdf](https://www.ijidonline.com/article/S1201-9712(18)34491-6/pdf).
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