Renal parenchymal malacoplakia and megalocytic interstitial nephritis: clinical and histological features. Report of two cases and review of the literature.

We report 2 cases of acute renal failure caused by rare and closely related inflammatory conditions, i.e. renal parenchymal malacoplakia and megalocytic interstitial nephritis. We have discussed the clinical presentation, natural progression of the disease, the short- and longterm prognosis of the kidney, the histological appearances, the radiological features and the medical therapy together with a review of the literature.