[The nephrotic syndrome in renal biopsies].

Among 1,499 representative renal biopsies in 278 cases nephrotic syndrome was diagnosed. In the latter only in 201 glomerulonephritis was confirmed by biopsy and in 77 (more than one quarter) the bioptic finding was different. The authors attempt to analyze the essential feature of nephrotic syndrome focused on the glomerular basal membrane and surrounding structures.