• Presse Med · May 2006

    Review

    [Diagnosis of lymphocytopenia].

    • Alice Berezné, Wafaa Bono, Loïc Guillevin, and Luc Mouthon.
    • Service de médecine interne, Hôpital Cochin, AP-HP, université Paris-Descartes, faculté de médecine, Paris (75).
    • Presse Med. 2006 May 1; 35 (5 Pt 2): 895902895-902.

    AbstractLymphopenia is defined as a peripheral lymphocyte count lower than 1500/mm3 in adults and 4500/mm3 in children younger than eight months of age. We propose a classification of lymphopenia according to the mechanism involved: lymphocyte production defects, including primary immune deficiencies and immune deficiencies secondary to malnutrition or zinc deprivation; excess catabolism, due to causes including radiotherapy, chemotherapy, immunosuppressive therapy, HIV infection, and systemic lupus erythematosus; abnormal lymphocyte trapping, including mainly splenomegaly, certain viral infections, septic shock, extended burns, systemic granulomatosis, and corticosteroids; other causes of lymphocytopenia, with mechanisms that remain poorly understood: ethnicity (Ethiopians), lymphoma, renal insufficiency, and idiopathic CD4 lymphocytopenia.

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