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  • Title: Thin glomerular basement membrane disease: light microscopic and electron microscopic studies.
    Author: Suh KS, Kim JO, Kang GH.
    Journal: J Korean Med Sci; 1997 Jun; 12(3):234-9. PubMed ID: 9250920.
    Abstract:
    Benign recurrent hematuria usually indicates a good prognosis. This condition is associated with abnormally thin glomerular basement membranes. Of 680 renal biopsy cases in which lower urinary tract disease had been excluded by careful study, 25 cases from seven children and eighteen adults met the criteria for thin glomerular basement membrane disease, placing the incidence of the disease at 3.7%. The mean patient age was 32.4 years and the male to female ratio was 1 to 5.3. The primary finding was microscopic hematuria in eighteen patients and gross hematuria in five patients. Among eighteen patients who had microscopic hematuria, one patient also exhibited proteinuria and one patient suffered from acute renal failure due to acute drug-induced interstitial nephritis. Proteinuria was only found in one patient. All of the patients had normal renal function, with the exception of one who suffered from acute renal failure. The duration of hematuria from the time of detection to the date of biopsy ranged from 3 months to 30 years with a mean interval of 56.6 months. No apparent evidence of familial hematuria in any patient was noted. Under light microscopy most glomeruli were normal. However, five cases showed focal global sclerosis. Under immunofluorescence microscopy seventeen cases were negative for all immunoglobulins, for complement, and for fibrinogen. Eight cases showed nonspecific mesangial deposition of fibrinogen and/or IgM. Ultrastructurally, extensive diffuse thinning of the GBM was a constant finding. The mean thickness of the GBM was 203.2 +/- 28.3 nm (n = 25); the thickness in adult (201.4 +/- 27.5 nm; n = 18) did not differ from that in children (208.1 +/- 32.0 nm; n = 7).
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