Monocytopenia can result from Chemotherapy-induced myelosuppression (along with other cytopenias) Hematopoietic cell mutation involving GATA2 Neoplastic disorders (eg, hairy cell leukemia, acute lymphoblastic leukemia, Hodgkin lymphoma) Infections (eg, HIV infection, Epstein-Barr virus infection, adenovirus infection, miliary tuberculosis) Corticosteroid or immunoglobulin therapy Gastric or intestinal resection Transient monocytopenia can occur with transient lymphocytopenia with infections, the stress response. endotoxemia, hemodialysis, or cyclic neutropenia.