Two cases of squamous carcinoma of the anus developing from condylomata acuminata are reported. The general characteristics of condylomata acuminata are reviewed: viral etiology due to HPV virus, histological appearance and role in the the genesis of certain cancers. The association of condylomata acuminata and cancer of the anus is more particularly studied in a review of the literature: etiology, anatomoclinical aspects, treatment and current state of knowledge concerning the oncogenic role of HPV virus at this site.