[Malacoplakia in a rectal adenocarcinoma. Review of the literature. Apropos of a case].

Malakoplakia is a rare granulomatous lesion involving rarely organs other than the urinary bladder. 39 cases of colo-rectal Malakoplakia have been published. 12 of them are associated with a colo-rectal tumor. The authors report in this paper a new case of rectal Malakoplakia associated with an adenocarcinoma. An ultrastructural study show septate junctions between the phagolysosomes. This very rare feature and the physiopathology of the association Malakoplakia-adenocarcinoma are discussed.