The hemolytic-uremic syndrome is a pathology characterized by a triad consisting 
of acute renal failure, microangiopathic hemolytic anemia and thrombocytopenia, 
with complications of the central nervous system arising in a considerable 
number of cases. Altered cranial computerized tomography examinations usually 
reveal cerebral infarctions. We present here two cases in which diffuse 
hypodensity was observed in the white matter in addition to the infarcts. This 
hypodensity was reversible after resolution of the acute phase of the disease, 
as is also the case for the alterations described in uremic encephalopathy and 
in hypertensive encephalopathy of other etiologies.