A Case of Systemic Lupus Erythematosus and Antineutrophil Cytoplasmic Antibodies-Associated Vasculitis Overlap Syndrome

Figure 2

Renal biopsy findings. Eleven of 21 glomeruli presented crescent formation including five cellular crescents and six fibrocellular crescents in light microscope. (a) Renal biopsy revealing necrotizing glomerulonephritis with cellular and fibrocellular crescent formations. No wire loop lesion or nuclear fragmentation is present (hematoxylin-eosin stain). Immunofluorescence staining showing only deposition of IgM and C3c in mesangial areas and peripheral capillaries: (c) IgG, (d) IgM, (e) C3c, and (f) C1q. Electron microscopy showing no electron-dense deposits (b).

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