Figure 1: Image findings. A: Chest computed tomography with pleural effusions. B: Kidney biopsy under light microscopy, hematoxylin & eosin stain, glomeruli with diffuse mesangial, and endocapillary hypercellularity with lobulated accentuation. C: Kidney biopsy, light microscopy, periodic acid-Schiff (PAS) stain, a glomerulus with a fibrocellular crescent. D: Kidney biopsy, light microscopy, PAS stain, glomerular arterioles with fibrin thrombi. E and F: Kidney biopsy, electronic microscopy, glomeruli with subepithelial, subendothelial and mesangial deposits. G: Kidney biopsy, IgG immunofluorescence staining with capillary and mesangial granular deposits and a few tubular basement membrane deposits. H: Kidney biopsy, C1q immunofluorescence staining with capillary and mesangial granular deposits.