Younger onset myeloperoxidase-specific antineutrophil cytoplasmic antibody- (MPO-ANCA) related glomerulonephritis accompanied with nephrotic syndrome.
2003
It is known that nephrotic syndrome rarely accompanies myeloperoxidase-specific antineutrophil cytoplasmic antibody- (MPO-ANCA) related glomerulonephritis. We present a case of younger onset MPO-ANCA-related glomerulonephritis accompanied with nephrotic syndrome in a female patient. It was diagnosed through tile renal biopsy and the detection of a high titer of MPO-ANCA and steroid therapy (intravenous steroid pulse therapy and oral administration), anticoagulant therapy and antiplatelet therapy were initiated. Since her nephrotic syndrome persisted in spite of the decrease of MPO-ANCA, we conducted a second renal biopsy. We found active necrotizing crescentic glomerulonephritis with a small deposition of immunoglobulin and fibrinogen on the glomeruli. To suppress her disease activity, we administered second steroid-pulse therapy and MPO-ANCA titer disappeared. However, as her nephrotic syndrome, which was accompanied by severe hyperlipidemia, persisted, we tried to treat her using low-density lipoprotein (LDL) apheresis. It was effective temporarily, but she finally fell into end-stage renal failure. We discuss here the possibility of double nephropathy by considering her clinical and renal pathologic features.
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