[Anal cancer screening. A decade's experience of a consultation in a tertiary centre].

Anal cancer is a disease with a low but gradually increasing incidence, especially in developed countries. Most of these cancers are caused by the HPV. In Switzerland, more than 70 % of the sexually active population is infected with HPV at least once, making it the most common sexually transmitted disease.

[Screening for anal cancer : is it the same as for cervical cancer ?].

Anal dysplasia is usually caused by HPV infection and can lead to squamous anal cancer. The purpose of this article is to describe the classification of these precursor lesions but above all to identify the groups of patients at risk and to clarify the screening and follow-up that must be initiated.