PMID: 375278Oct 1, 1978Paper

Primary IgA glomerulonephritis and Schönlein-Henoch purpura nephritis: Clinicopathological and immunohistological characteristics

The Quarterly Journal of Medicine
Y NakamotoJ Takeuchi

Abstract

A comparative analysis on clinicopathological and immunohistological characteristics was performed of 205 cases with primary IgA nephritis and 35 with Schönlein-Henoch purpura nephritis (purpura nephritis). Diagnostic criteria for primary IgA nephritis were set out so that IgA was either the most prominent immunoglobulin or, at least, equal to IgG and/or IgM, if present, irrespective of mesangial or peripheral localization. In primary IgA nephritis, one half of the cases were discovered by asymptomatic proteinuria, and one-third presented recurrent upper respiratory tract infection and gross hematuria, one-fourth abdominal pain and a few cases joint pain, while purpura nephritis was associated with a significantly higher incidence of such systemic symptoms as abdominal and joint pains, in addition to purpura. Both diseases shared a tendency toward conspicuous hematuria in contrast to the modest proteinuria, with normal renal function in three-fourths to two-thirds. Moreover, four of 35 with purpura nephritis showed preceding proteinuria and had been regarded as primary IgA nephritis until purpura appeared. The glomerular pathology had a common feature in that there was frequent occurrence of mesangial proliferative and focal an...Continue Reading

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