PMC5663211_01
A: light microscopy (PAS); B: Tri-chrome; C: IgG deposits; D: kappa-deposits; E, F: Subendothelial electron-dense deposits consistent with cryoglobulin immune complexes.
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Figure1
On hospital day 14, a percutaneous kidney biopsy revealed membranoproliferative glomerulonephritis type I with mixed cryoglobulinemia type II with minimal fibrosis and underlying acute tubular necrosis (Figure 1).