PMC4756134_01
Renal biopsy during AKI. (a) Masson trichrome staining showing nonnecrotic interstitial infiltrate (arrows) affecting 20% of the kidney biopsy (magnification x40). (b) Higher magnification of the area boxed in (a) showing the granulomatous interstitial infiltrate composed of epithelioid cells (arrow), some multinucleated giant cells (arrowhead), and a lymphoplasmacytic infiltrate (asterisk) (magnification x200).
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fig1
Histological analysis of the renal biopsy, performed on June 11, 2013, found nonnecrotic granulomatous interstitial nephropathy with epithelioid cells, some multinucleated giant cells, a lymphoplasmacytic infiltrate, and tubular atrophy in 20% of the kidney biopsy tissue (Figure 1).