myelocytic leukemoid reaction

my·e·lo·cyt·ic leu·ke·moid re·ac·tion

leukocytosis of at least moderate degree, for example, 50,000 or more per mm3, with a few immature forms, for example, 1 or 2% myelocytes, but chiefly mature polymorphonuclear leukocytes in the circulating blood; may be observed in association with tuberculosis, chronic osteomyelitis, various types of empyema, malaria, pneumococcal pneumonia, meningococcal meningitis, Hodgkin disease, and metastases of carcinoma in the bone marrow.