Imiquimod anal tampons treatment of anal intraepithelial neoplasia.

The prevalence of Human Papillomavirus (HPV) in men who have sex with men (MSM) is high, reaching 85-93% prevalence in HIV-positive men. High-risk HPV are strongly associated with development of high degrees of anal intraepithelial neoplasia (AIN) which, later on, can develop in anal squamous carcinoma. The growing incidence of anal cancer during last years is particularly important in MSM and HIV-positive patients, in which the coexistence of multiple serotypes of HPV reduces the probability of eliminating the AIN. The treatments for anal dysplasia have shown limited effectiveness. Imiquimod (1-[2-methylpropyl]-1H-imidazo-[4,5-c]-quinolin-4-amine) has been successfully used for different neoplasia. This article is protected by copyright. All rights reserved.