[Chronic renal insufficiency in urogenital bilharziasis].

Schistosoma haematobium eggs may occasionally be found in the renal parenchyma, usually with no pathological consequences, the main risk to the kidney being obstruction of the urinary tract by bilharzial lesions. Egg deposits in the submucosa and muscles of the excretory tract induce obstruction and sclerosis, mainly in the ureters. Bilateral stenosing bilharzial ureteritis results in mechanical obstruction of the renal function, sometimes, unfortunately, accentuated by sepsis and pyelonephritis. This condition is a strong indication for surgical repair of the stenotic lesions of the urinary tract, which must be performed before the onset of irreversible damage to the renal function.