Renal hydatidosis masquerading as xanthogranulomatous pyelonephritis: a new case report.

Human hydatid disease is still endemic in pastoral and rangeland areas, with temperate climate, mainly in the southern shore of the Mediterranean, particularly in the Maghreb countries. Renal localization is rare although it is the most frequent site of the urinary tract. Its clinical evolution remains silent for long time, and the diagnosis is often elusive for years. Renal hydatid cysts may pose a problem of differential diagnosis. Our case concerns a renal hydatidosis misdiagnosed as a xanthogranulomatous pyelonephritis, treated by total nephrectomy.