METHODS: We performed a retrospective cohort study that included those patients in whom, according to our protocol, anal cytology was performed between 2008 and 2011. Also we conducted a survey on sexual habits and screening for other STIs. Finally, we conducted a descriptive and analytical study assessing bivariate distribution of cytological alterations and grade of anal dysplasia.
RESULTS: A total of 347 anal cytologies were performed, and 48.1% were abnormal. Statistically significant differences were found between the presence of condylomata perianal/endoanal, HIV infection, Chlamydia trachomatis infection and the presence of cytologic alterations.
CONCLUSIONS: There was a high incidence of anal dysplasia in our group of individuals with risky sexual habits; however, it is probably underdiagnosed due to its subclinical nature and lack of a well-established screening protocol.