Journal 11, November 2022pages: 779-780
1 Department of Internal Medicine C, Wolfson Medical Center, Holon, Israel
2 Allergy and Clinical Immunology Unit, Wolfson Medical Center, Holon, Israel
3 Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
Hypereosinophilia is defined as the absolute eosinophilic count of above 1500 cells/µL in the peripheral blood on two separate tests taken during one month and/or the pathological confirmation of hypereosinophilia. There are many conditions that are associated with increased eosinophil counts including: parasitic infections, drug reactions, eosinophilic granulomatosis with polyangiitis, allergic reactions, drug reaction with eosinophilia and systemic symptoms (DRESS), primary immunodeficiencies (PID), eosinophilic gastrointestinal diseases (EGID), familial hypereosinophilia, and neoplasms . Molecular classification may be an adjuvant in the classification of hypereosinophilia . Our patient presented with hypereosinophilia as part of a paraneoplastic syndrome.