Eosinophilic infiltration in lymph node in a child with idiopathic hypereosinophilic syndrome

Hypereosinophilia is a frequent symptom that may occur in course of many underlying diseases. Hypereosinophilic syndrome (HES) is characterized by following criteria-Eosinophil count greater than 1500 μl persisting longer than 6 months and single or multiple organ system dysfunction attributable to cytotoxic injury by eosinophils without an identifiable etiology to explain eosinophilia. We present a case of HES with peripheral eosinophilia showing eosinophilic infiltration in lymph node. In an eleven year old boy who presented to Respiratory medicine OPD with intermittent fever and papular skin rashes