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Lymphocytosis is an increase in the number or proportion of lymphocytes in the blood.Absolute lymphocytosis is the condition where there is an increase in the lymphocyte count beyond the normal range while relative lymphocytosis refers to the condition where the proportion of lymphocytes relative to white blood cell count is above the normal range.
Lymphoproliferative disorders (LPDs) refer to a specific class of diagnoses, comprising a group of several conditions, in which lymphocytes are produced in excessive quantities. These disorders primarily present in patients who have a compromised immune system .
Autoimmune disease is the second most common clinical manifestation and one that most often requires treatment. The most common autoimmune presentations include autoimmune cytopenias, which can be mild to very severe and intermittent or chronic. [5] These include autoimmune hemolytic anemia, autoimmune neutropenia, and autoimmune thrombocytopenia.
[1]: 1887 [2]: 727 It is named for Max Jessner. [3] [4] It is thought to be equivalent to lupus erythematosus tumidus. [5] It can occur as the result of ACE inhibitors and a number of medications used to treat multiple sclerosis including glatiramer acetate. [6]
In immunology, immunoproliferative disorders are disorders of the immune system that are characterized by the abnormal proliferation of the primary cells of the immune system, which includes B cells, T cells and natural killer (NK) cells, or by the excessive production of immunoglobulins (also known as antibodies).
Epstein–Barr virus–associated lymphoproliferative diseases; F. ... Monoclonal B-cell lymphocytosis; ... This page was last edited on 2 April 2018, ...
Epstein–Barr virus–associated lymphoproliferative diseases (also abbreviated EBV-associated lymphoproliferative diseases or EBV+ LPD) are a group of disorders in which one or more types of lymphoid cells (a type of white blood cell), i.e. B cells, T cells, NK cells, and histiocytic-dendritic cells, are infected with the Epstein–Barr virus (EBV).
A systematic review recently reported the pooled proportion are fever 97.2%, hepatomegaly 70.2%, splenomegaly 78.4%, thrombocytopenia 90.1%, anemia 76.0%, and serum ferritin ≥500 μg/L 97.1%. The case fatality rate is 14.6% among dengue hemophagocytic lymphohistiocytosis patients. [6]