[Cloacogenic carcinoma of the anus. Description of a clinical case]

A clinical case of cloacogenic anal carcinoma is reported. These neoplasms, deriving from embryonal residuals at different levels of the ano-rectal junction, have a better prognosis than squamous carcinomas; the surgical alternative to abdomino-perineal resection is a simple local exeresis for small tumours that do not invade the muscular layer, with a good radical result as reported by the literature.