Perianal Paget's disease: report of five cases.

Paget's disease of the anus is a rare perianal disorder. The condition is often associated with underlying invasive carcinoma. The prognosis is poor when rectal adenocarcinoma is present. Five own cases of perianal Paget's disease are presented. In two of our cases an underlying adenocarcinoma was found in the anorectum. Adenocarcinoma is sweat gland ducts was found in one case. One patient developed an adenocarcinoma in the anorectal junction four years after the Paget diagnose. In only one of our cases no underlying adenocarcinoma was found.