PMC5437998_01
Light microscopy (A - C) and electron microscopy (D) pictures of a renal biopsy specimen. A: PAS stain showing glomerular tuft collapse and overlying epithelial hyperplasia. B: Jones' silver stain showing glomerular tuft collapse and overlying epithelial hyperplasia. C: Light microscopy showing acute tubular injury. D: Electron microscopy showing diffuse podocyte foot process effacement.
CNCS-4-011-01.jpg
PMC5437998_01_CNCS-4-011-01.jpg
Figure1
Kidney biopsy was consistent with collapsing glomerulopathy with evidence of tubular injury, moderate interstitial fibrosis, and tubular atrophy but no pathologic evidence of thrombotic microangiopathy (Figure 1). 
Bone marrow biopsy showing hemophagocytosis. Arrows depict red blood cells engulfed by macrophages in the bone marrow.
CNCS-4-011-02.jpg
PMC5437998_01_CNCS-4-011-02.jpg
Figure2
BM biopsy showed increased hemophagocytic activity with many ingested RBCs, neutrophils, and platelets (Figure 2).