Granulomatous nephritis.

Granulomatous nephritis (renal tuberculosis, malacoplakia, xanthogranulomatous pyelonephritis, and echinococcus disease) represents an infectious process that is characterized by (renal) parenchymal destruction and consists of a chronic cellular reaction and mature, mononuclear infiltrate. These infections may mimic one another as well as other renal infections and cystic and neoplastic disorders. This article addresses some of the unique aspects and similarities of these varied disease entities and their management.