Disease or Syndrome
lymphopenia Audio
[ lim-foh-pee-nee-uh, -peen-yuh ]
Subclass of:
Immunologic Deficiency Syndromes; Leukopenia
Definitions related to lymphopenia:
  • Decrease in the proportion of lymphocytes in the blood.
    CRISP Thesaurus
    National Institutes of Health, 2006
  • Reduction in the number of lymphocytes.
    NLM Medical Subject Headings
    U.S. National Library of Medicine, 2025
  • Lymphocytopenia is a total lymphocyte count of < 1000/mcL ( < 1 � 10^9/L) in adults or < 3000/mcL (< 3 � 10^9/L) in children < 2 years. Sequelae include opportunistic infections and an increased risk of malignant and autoimmune disorders. If the complete blood count reveals lymphocytopenia, testing for immunodeficiency and analysis of...
    Merck Manuals
    Merck & Co., Inc., 2025
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