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4312 Pathology

A 5-year-old child develops the sudden onset of bloody diarrhea, vomiting of blood, hematuria, and renal failure following a flulike gastrointestinal illness. The blood urea nitrogen (BUN) level is markedly increased, but fibrin degradation products and blood clotting times are within normal limits. A peripheral blood smear reveals poikilocytes, schistocytes, and a decrease in the number of platelets. No fever or neurologic symptoms are present. What is the best diagnosis for this patient?

AAutoimmune thrombocytopenic purpura (autoimmune ITP)
BHemolytic-uremic syndrome (HUS)
CDisseminated intravascular coagulopathy (DIC)
DThrombotic thrombocytopenic purpura (TTP)
Pathology
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