Malacoplakia of a cadaveric renal allograft: a case report.

A case of malacoplakia in a cadaveric renal allograft is presented. Infection and immunotherapy are presented as possible etiologic factors. The pathogenesis of malacoplakia is discussed with reference to histologic findings in this specific case. The suggestion is made that an altered macrophage response in this disease is the reason for this granulomatous lesion of the bladder.