A 12-year-old girl presented with concurrent onset of membranous glomerulonephritis and Crohn's disease of the small intestine. Subsequent investigations failed to implicate any other systemic disease as a cause of the glomerulonephritis. Membranous glomerulonephritis is an immune complex--mediated glomerulopathy frequently associated with underlying systemic disease. The association of immune complex phenomenon with Crohn's disease and the variation of renal abnormalities in parallel with activity of bowel disease in this patient suggest that the glomerulonephritis may be due to the underlying Crohn's disease.
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O’Loughlin et al. (1985) studied this question.
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