Lymphocytosis

The lymphocytosis is a finding of blood examination, which is characterized by an increased number of lymphocytes. Thus it is a special case of leukocytosis. We distinguish between absolute and relative lymphocytosis. In the first case, the total number is ( normally about 1.000-4.800/μl are blood ) increases, in the second case, only the percentage of lymphocytes to leukocytes in the context of the so-called differential blood count ( approximately 16-45 % ) is too high, which is also at a may be relative decrease in the myeloid cell line.

The cause of an isolated lymphocytosis are primarily viral infections and diseases of the blood-forming organs ( acute lymphoblastic leukemia, chronic lymphocytic leukemia) in question. A lymphocytosis is beyond before a late response in inflammation and chronic infectious diseases and chronic allergies. In children or young animals lymphocytosis is physiological.

In another sense, an increase in the number of lymphocytes in other body fluids (e.g., in the cerebrospinal fluid ) so designated.