The Hypereosinophilic Syndrome

Abstract
Together with pronounced blood eosinophilia an endomyocardial biopsy is the method of choice in diagnosing and assessing the severity of the systemic disorder hypereosinophilic syndrome (HES). Eosinophilia is not uncommon in several connective tissue diseases which may share clinical manifestations with HES. We report a case of HES, investigated and followed up with cardiac biopsies. A missing right radial artery pulsation gave rise to several differential diagnostic considerations.