Abstract
Nephrotic syndrome (NS) is common in childhood and is an idiopathic disease as a rule. This disorder is usually responsive to treatment with corticosteroids (steroid-sensitive nephrotic syndrome - SSNS), not evolving to impaired renal function. The classification based on response to treatment (SSNS versus SRNS) is an essential indicator of prognosis. However, in 10%-20% of cases there is…