causes of leukopenia
Benign White Cell Disorders: Leukopenia. Leukopenia refers to an abnormal decrease in the number of leukocytes. This may be secondary to a deficiency of any or all of the WBCs but it is most commonly caused by a depression of neutrophils (neutropenia). Granulocytopenia, often used as a synonym for neutropenia, technically refers to decreased eosinophils and basophils as well as neutrophils.