Haemolytic uraemic syndrome in a patient with acute lymphoblastic leukaemia.

We describe a patient diagnosed with haemolytic uraemic syndrome (HUS) during long-term maintenance therapy for childhood acute lymphoblastic leukaemia (ALL). He rapidly developed renal failure, hypertension and profound thrombocytopenia. Despite suffering a large intracerebral haemorrhage, he made a full recovery without residual neurological or renal deficit. His case raises the question of whether ALL or its treatments predispose an individual to developing HUS.