Inclusion Criteria:  Age> 18 years old. Patient treated for non-metastatic squamous cell anus cancer with the presence of an HPV infection authenticated on the biopsy. Patient living with a partner or having an active sex life the year preceding the diagnosis. Patient who, after information, agrees to participate in the study. Patient affiliated to a French social security scheme.  Exclusion Criteria:  Patient unable or unwilling to complete a questionnaire on the quality of sexual life. Patient without sexual activity the year before diagnosis. Patient whose regular follow-up is impossible for psychological, family, social or geographic reasons. Patient under guardianship, curatorship or legal protection.