Definitions for leukocytosisˌlu koʊ saɪˈtoʊ sɪs
This page provides all possible meanings and translations of the word leukocytosis
Random House Webster's College Dictionary
leu•ko•cy•to•sisˌlu koʊ saɪˈtoʊ sɪs(n.)
an increase in the number of white blood cells in the blood.
Category: Pathology, Physiology
Origin of leukocytosis:
an abnormal increase in the number of white blood cells in the blood as a result of infection (as in leukemia)
Leukocytosis is a white blood cell count above the normal range in the blood. It is frequently a sign of an inflammatory response, most commonly the result of infection, and is observed in certain parasitic infections. It may also occur after strenuous exercise, convulsions such as epilepsy, emotional stress, pregnancy and labour, anesthesia, and epinephrine administration. There are five principal types of leukocytosis: ⁕Neutrophilia ⁕Lymphocytosis ⁕Monocytosis ⁕Eosinophilia ⁕Basophilia This increase in leukocytes is usually accompanied by a "left shift" in the ratio of immature to mature neutrophils. The increase in immature leukocytes increases due to proliferation and release of granulocyte and monocyte precursors in the bone marrow which is stimulated by several products of inflammation including C3a and G-CSF. Although it may indicate illness, leukocytosis is considered a laboratory finding instead of a separate disease. This classification is similar to that of fever, which is also a test result instead of a disease. "Right shift" in the ratio of immature to mature neutrophils is considered with reduced count or lack of "young neutrophils" in blood smear, associated with the presence of "giant neutrophils". This fact shows suppression of bone marrow activity, as a hematological sign specific for pernicious anemia and radiation sickness.9
U.S. National Library of Medicine
A transient increase in the number of leukocytes in a body fluid.
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