This report describes a child who presented with classic hemolytic ure
mic syndrome (HUS) and 4 months later developed a life-threatening but
reversible cardiomyopathy with global cardiac dysfunction and a left
ventricular ejection fraction of 14%. There was no evidence of electro
lyte abnormalities, anemia, hypertension, severe fluid overload, or vi
ral infection, Endomyocardial biopsies were consistent with a dilated
cardiomyopathy, This paper highlights the importance of considering th
e diagnosis of associated cardiomyopathy when presenting with late-ons
et edema following HUS.