PMC4528179_01
Crescents on light microscopy.
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F1
He had a kidney biopsy, which showed diffuse necrotizing, sclerosing, and primarily pauci-immune crescentic glomerulonephritis (Figure 1).
Immunofluorescence linear staining of IgG.
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F2
Immunofluorescence also revealed faint linear staining of GBM for IgG (Figure 2).