They can be spread by vaginal, anal, and oral sex 1. The panel notes that full vaccine coverage amongst adolescent girls was only at When the body is less able to fight off infections, viruses like HPV can become more active, which might trigger the development of anal cancer. In fact, people can be totally unaware that they even had symptoms or HPV. Used alone, the HPV test will help determine the need for additional testing or screening. HPV infects epithelial cells. Grants Policies and Process.
Nov 13, · The exact cause of anal cancer is not known, but most anal cancers seem to be linked to infection with the human papilloma virus (HPV). Anal cancer: About 95% of anal cancers are caused by HPV. The National Cancer Institute should be credited as the source and a link to this page included. Those who have had cervical, vulvar or vaginal cancer have an increased risk of anal cancer. Human papillomavirus Anal cancer. Symptoms & causes; Diagnosis.