Figure 1From: Long term follow up of congenital thrombotic thrombocytopenic purpura (Upshaw-Schulman syndrome) on hemodialysis for 19 years: a case report Renal histopathological findings. A, B: Fibrin thrombi in small arteries (arrows) and a glomerulus containing numerous red blood cells ( A: Heidenhain's azan trichrome stain, B: Periodic acid methenamine silver stain Ă— 400). C: Endothelial cell swelling (arrows) (Heidenhain's azan trichrome stain Ă— 400).Back to article page