[Recommendations for the management of cancers of the anal canal].

Anal canal carcinomas remain rare, but their management has improved recently. The PET-CT is now used as a standard at the first diagnosis and after relapses. The introduction of intensity-modulated irradiation techniques makes it possible to better conform the pelviperineal and inguinal volumes, improving the homogeneity of the irradiation while sparing some pelvic structures, thus reducing acute and late effects. Nevertheless, the conversion from 3D to intensity-modulated radiotherapy needs a specific and careful approach, mainly for the management of the perineal region, where relapses and complications occur. Last but not least, new chemotherapy associations are studied for metastatic disease.