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  • Title: Idiopathic collapsing glomerulopathy in children.
    Author: Gulati A, Sharma A, Hari P, Dinda AK, Bagga A.
    Journal: Clin Exp Nephrol; 2008 Oct; 12(5):348-353. PubMed ID: 18392736.
    Abstract:
    BACKGROUND: Collapsing glomerulopathy (CG) is a clinically and pathologically distinct variant of focal segmental glomerulosclerosis (FSGS). Pathologically similar lesions have been reported in adults and children with human immuno-deficiency virus (HIV) infection. However, there is a recent interest in the recognition of this variant in the absence of HIV infection. AIM: To evaluate the clinical presentation and outcome of our pediatric patients with idiopathic CG. METHODS: A sum of six children with idiopathic CG, aged 1-7 years at presentation, were retrospectively identified. Clinical data and renal biopsy were reviewed for all patients. Serum creatinine and estimated GFRs at presentation and last follow-up were compared using the Wilcoxon signed rank test and the risk factors for occurrence of ESRD analyzed using the Cox proportional hazard models. RESULTS: Steroid-resistant nephrotic syndrome with or without azotemia was the presenting clinical finding in all the cases. The median serum creatinine values at onset and last follow-up were 1.05 and 1.25 mg/dl, respectively (p = 0.128). Following immunosuppressive therapy one patient achieved complete remission of proteinuria, and four were in partial remission. The remaining one patient did not show any change in proteinuria at 6 months of therapy. Two of the six patients progressed to end-stage renal disease within a median follow-up period of 27 months (range 14-96 months). CONCLUSIONS: Collapsing glomerulopathy is an aggressive variant of focal segmental glomerulosclerosis. All patients with CG should be screened for the underlying etiology, and patients with idiopathic CG should be offered a trial of immunosuppressive therapy.
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