[Hypereosinophilia syndrome]

The authors of the submitted paper describe the diagnosis, course and treatment of hypereosinophilic syndrome in a 36-year-old female patient with marked affection of the right ventricle: endomyocardial fibrosis with parietal thrombi obliterating the cavity of the right ventricle. The clinical picture was dominated by rapid progression of severe cardiac decompensation with a fatal outcome.