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  • Title: Kidney biopsy prior to cyclophosphamide therapy in primary nephrotic syndrome.
    Author: Mattoo TK.
    Journal: Pediatr Nephrol; 1991 Sep; 5(5):617-9. PubMed ID: 1911150.
    Abstract:
    The study includes 30 children, 10 each with minimal change nephropathy (MCNS), diffuse mesangial proliferative glomerulonephritis (MesPGN) and focal segmental glomerulosclerosis (FSGS). Indications for kidney biopsy were: steroid resistance in 12 cases, and frequent relapses on maintenance steroid therapy in 18 cases. A 2-year remission was achieved by cyclophosphamide therapy in 6 patients with FSGS, 8 patients with MCNS and 8 patients with MesPGN. In terms of initial response to corticosteroids, only 3 of 8 patients with early steroid resistance responded to cyclophosphamide therapy compared with 3 of 4 with late steroid resistance and 16 of 18 with frequent relapses on maintenance steroid therapy. Response to cyclophosphamide therapy correlates better with the initial corticosteroid response than renal histopathology. A kidney biopsy prior to administration of cyclophosphamide is not essential in patients who respond to initial corticosteroid therapy.
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