Background: An association between human papilloma virus (HPV) infection and progression to anal intraepithelial neoplasia (AIN) and epidermoid cancer has been established.
Objective: To know the prevalence of low and high grade AIN, as well as HPV infection in an anoreceptive patients group, infected or not, by human immunodeficiency virus (HIV).
Material And Methods: All patients with anoreceptive sexual relations were considered in this study.