 Anal cytology may also be used to screen for HPV associated anal lesions, and among HIV-infected men who have sex with men, an abnormal cytology is frequently associated with a dysplastic squamous cell lesion of the anus. Anal HPV infections high risk types have been found in 53 95 of HIV-infected men. Abnormal anal cytology has been found in 41-81 of HIV-infected men screened with high-grade cytologic findings in 2-25 of these patients 2. 