[Comparative clinical and histological studies in the diagnosis of isolated proteinuria and hematuria].

In 311 patients with clinical suspicion to glomerulonephritis biopsies of the kidneys were performed. In these cases in 82% the histological or tentative diagnosis, respectively, of a glomerulonephritis could be made. As diseases preceding the glomerulonephritis relapsing tonsillitides are occupying the first place, whereas scarlet fever, otitides, furunculoses and sinusitides were observed more infrequently. Clinically cases of oligosymptomatic glomerulonephritis were more frequently observed than monosymptomatic ones. One fifth of the patients exhibited a restricted renal function or a proteinuria of 3 g/24 hours, in which case proliferatively sclerosing, diffusely proliferative and membranaceous forms occupied the first place.