Studies on chance proteinuria and/or hematuria in students

Screening urinalysis of 89, 137 (72.4%) out of 123, 148 students in Nagoya University were carried out from 1972 to 1985. The percentage of proteinturia and hematuria were 5.4% and 1.1% respectively at screening test. Renal biopsy was performed in 98 students with chance proteinuria and/or hematuria. The following results were obtained. Minor glomerular abnormalities were shown on the renal specimens in 50.0% of biopsied cases on light microscope. Group of isolated hematuria had the mildest histological finding, comparing with group of proteinuria alone and that of both hematuria and proteinuria. Moreover, group of proteinuria alone showed milder histological changes than that of both hematuria and proteinuria. Immunonuorescent study was carried out in 49 cases. IgA nephropathy accounted for 44.9% of these cases.