Evans' syndrome is an unusual illness of autoimmune etiology, characterized by 
thrombocytopenia and hemolytic anemia. This is more frequent in females 
throughout first half of the life and during pregnancy. The present paper 
describes two pregnant women with Evans syndrome associated to preeclampsia. 
This report emphasizes how the hematology and coagulation abnormalities of 
preeclampsia could be added to those abnormalities observed in Evans' syndrome. 
This association constitutes a severe disease of difficult treatment.