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Abstract：
Fibrillary glomerulonephritis (FGN) is a rare disorder accounting for up to 1% of all glomerulonephritis (GN). FGN usually manifests as nephrotic or subnephrotic proteinuria, hematuria, and hypertension in patients after the sixth decade. The overall prognosis of FGN is very poor. Crescentic presentation of FGN is uncommon which may be diagnosed as rapidly progressive glomerulonephritis (RPGN) unless electron microscopy and/or special stains are done. We report a case of a young female who presented as RPGN but diagnosis was revised to crescentic FGN after electron microscopy and immunohistochemical staining with DNAJB9 stain. Patient remained dialysis-dependent after treatment with steroid and cyclophosphamide for 2 months and progressed to end-stage renal disease (ESRD). Crescentic FGN usually does not respond to treatment and invariably progresses to ESRD over few months. This case emphasizes the defining role of electron microscopy and special stains in diagnosing uncommon glomerular diseases.
摘要：
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