Febrile neutropenia is one of the most serious complications in patients with haematological malignancies and chemotherapy. A prompt identification of infection and empirical antibiotic therapy can prolong survival. This paper reviews the guidelines about febrile neutropenia in the setting of hematologic malignancies. providing an overview of the definition of fever and neutropenia. https://www.foldlyers.shop/product-category/sub-assemblies/