Sindrome uremico hemolitico: ubicación nosologica actual / Hemolytic uremic syndrome (HUS): an up-dated nosological classification

An up-date of the causes and pathogenesis of the HUS is reported. After more than 40 years of research we are able to define the infectious agents and the toxin involved. The mechanisms and the molecules involved in the non-diarrheal (atypical) entities producing HUS have also been characterized. This new situation allows us to develop a diagnostic algorithm that enables us to better define preventive and therapeutic measures, based on more rational evidence.