[Effect of furosemide on proteinuria in patients suffering from amyloidosis and chronic nephritis with various tubulostromal lesions of the kidneys].

The data on protein excretion with urine under the effect of furosemide were compared clinically and morphologically with the morphological signs of tubulostromal lesions in the kidneys in 19 patients suffering from amyloid nephropathy and in 33 patients with chronic glomerulonephritis. The data obtained show the morphofunctional importance of the furosemide test which is likely to be used for identification of pronounced tubulostromal lesions in the kidneys in the given disease entities as well as for making differential diagnosis between renal amyloidosis and chronic glomerulonephritis.