[Glomerulonephritis (GN) in childhood.  I. Epidemiology, clinical aspects and kidney function in 125 children]. 
The blood pressure, urinary symptoms (proteinuria, hematuria, casts), the albumin- and cholesterol concentration in the serum and the renal function (GFR, RPF) of 125 children with chronic glomerulonephritis (GN) were analysed.  76 children had only single symptoms (93% proteinuria, 33% hypertension), which indicated a GN.  The serum albumin and cholesterol concentration were pathological in 43% of the patients and serum creatinine level was pathological in 20% of the children.  After 6 years the individual courses of renal function demonstrated a deterioration of GFR and RPF for most of the children.  It can be concluded, that the summary consideration of epidemiology, symptomatology and renal function of different glomerular lesions has only a limited application to the clinical practice.