Primary Nonfunction of Renal Allograft Secondary to Acute Oxalate Nephropathy

Figure 3

(a) shows widespread massive aggregate of CaOx crystals in the renal collecting system extending into the parenchyma seen under polarized light. (b) shows a region of (a) under high power showing accumulation of polygonal crystals with multicolored birefringence under polarized light. AON: acute oxalate nephropathy, CaOx: calcium oxalate.