Benign WBC disorders Flashcards

1
Q

leukemoid reaction

A

exaggerated response to infection defined as absolute leukocyte count > 50,000; caused by perforating appendicitis (neutrophils), whooping cough (lymphocytes), or nematodes (eosinophils)

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2
Q

leukoerythroblastic reaction

A

immature bone marrow cells in PB; may be due to infiltrative disease (BM fibrosis, metastatic breast cancer) or severe BM stress (sepsis, growth factor)

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3
Q

neutrophilia

A

absolute neutrophil count > 7,000; caused by infection, sterile inflammation with necrosis, or drugs

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4
Q

neutropenia

A

absolute neutrophil count

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5
Q

eosinophilia

A

absolute eosinophil count > 700; caused by type I hypersensitivity reaction, invasive helminths, hypocortisolism, or neoplasms (i.e. Hodgkin lymphoma)

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6
Q

basophilia

A

absolute basophil count > 200; usually caused by CML, may also appear in CKD

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