Figure 1

Histopathological findings of renal biopsy. (A) Light photomicrograph showing two glomeruli with widened capillary lumina containing red blood cells (Hematoxylin and eosin stain; original magnification, ×200). (B) Severe tubular necrosis with a loss of cellular detail (Hematoxylin and eosin stain; original magnification, ×400). (C, D) Serial sections of an afferent arteriole with obliterative intimal change (C; arrowhead) and intraluminal thrombus formation (D; arrow) (Periodic acid silver methenamin stain; original magnification, ×400). (E) Smaller interlobular arteries and arterioles showed occlusion or extensive narrowing of their lumen which was interpreted to represent the sequel of TMA (D; Periodic acid-Schiff stain; original magnification, ×400).