Conventional cytologic diagnosis of human papillomavirus-induced anal intraepithelial neoplasia: The experience of a referral center in Rio de Janeiro, Brazil.

Background: Screening of anal cancer is rarely available or performed in Brazil. This study analyzes the diagnostic performance of conventional cytology (CC) in the prevention of anal cancer in a coloproctology and gynecology outpatient clinics in a public hospital in Rio de Janeiro, Brazil.

Methods: From 2005 to 2017, 1066 conventional cytological samples were collected.