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Isolated hematuria in children: indications for a renal biopsy

H Trachtman, R A Weiss, B Bennett

    Kidney International
    |January 1, 1984
    PubMed

    Insights

    In pediatric patients with isolated hematuria, a renal biopsy is often necessary. Clinical factors, like family history or gross hematuria episodes, accurately predict abnormal biopsy findings.

    Area of Science:

    • Pediatric Nephrology
    • Renal Pathology
    • Clinical Diagnostics

    Background:

    • Previous reviews on pediatric hematuria often included patients with broader renal abnormalities.
    • Isolated hematuria in children warrants specific diagnostic evaluation.

    Purpose of the Study:

    • To correlate clinical characteristics with renal biopsy findings in pediatric patients presenting with isolated hematuria.
    • To determine if clinical factors can predict the likelihood of abnormal renal histology.

    Main Methods:

    • Retrospective analysis of 76 pediatric patients (ages 3-19) undergoing renal biopsy for isolated hematuria between 1972-1981.
    • Histopathological examination using light microscopy, electron microscopy, and immunofluorescence.
    • Classification of patients into subgroups based on isolated microscopic hematuria, family history, and gross hematuria episodes.

    Main Results:

    • 56% of renal biopsies revealed abnormal histology.
    • Common diagnoses included Alport syndrome, IgA nephropathy, thinning of the glomerular basement membrane, and vascular C3 staining.
    • A significant increase in abnormal biopsy yield was observed with the presence of a family history or gross hematuria episodes.

    Conclusions:

    • Clinical presentation, specifically family history and gross hematuria, can accurately predict the diagnostic yield of renal biopsy in children with isolated hematuria.
    • Renal biopsy remains crucial for diagnosing underlying kidney diseases in pediatric patients with hematuria.

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