[Malacoplakia associated with adenocarcinoma of the rectum: clinico-pathologic and ultrastructural study]. / Malacoplaquia asociada con adenocarcinoma rectal: estudio clínico-patológico y ultraestructural.

A case of malacoplakia associated with rectal adenocarcinoma is reported. Optical and electron microscopic study disclosed a histiocytic infiltrate adjacent to the adenocarcinoma containing spherical and concentric inclusions designated as Michaelis-Gutmann bodies. The pathogenesis is discussed and the literature is reviewed.