hematology and oncology
Hypereosinophilic Syndrome
Idiopathic hypereosinophilic syndrome
Idiopathic hypereosinophilic syndrome is rare, has an unknown prevalence, and most often affects people age 20 through 50 years. Only some patients with prolonged Eosinophilia develop organ dysfunction that characterizes hypereosinophilic syndrome. Although any organ may be involved, the heart, lungs, spleen, skin, and nervous system are typically affected. Cardiac involvement can cause significant morbidity and mortality. 