[Anorectal malignant melanomas. Apropos of 5 cases. Review of the literature].

This study reports five cases of anorectal melanoma treated at Centre Val d'Aurelle-Paul Lamarque in Montpellier. There follows a discussion based upon the literature of epidemiological, clinical, histopathological and therapeutic aspects. Surgery is the treatment of choice but there is major controversy regarding the best method. The decisive prognostic factor appears to be the stage of the disease rather than the type of treatment. The role of radiotherapy, adjuvant chemotherapy and immunotherapy remains to be evaluated.