What you need to know about human papillomavirus (HPV) and anal cancer: Factsheet
Human papillomavirus (HPV) is a virus that is most easily passed during sexual contact. The body clears most HPV on its own. But certain types of the virus can cause a condition called anal dysplasia, which can then develop into anal cancer. Other types of HPV can cause other types of cancer. Some other types can cause warts of the genitals or anus (anogenital warts).