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Neutrophil marrow cellularity in neutropenia

J T Dancey, L H Brubaker

    American Journal of Hematology
    |June 1, 1982
    PubMed
    Summary

    Neutropenia (low neutrophil count) is often linked to diverse bone marrow disorders. Quantitative analysis reveals most patients exhibit abnormal neutrophil marrow cellularity, indicating complex underlying issues beyond simple neutrophil removal.

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    Area of Science:

    • Hematology
    • Cell Biology

    Background:

    • Neutropenia, characterized by low blood neutrophil counts (<2,000/microliter), necessitates investigation into potential bone marrow abnormalities.
    • Understanding neutrophil marrow cellularity is crucial for diagnosing the causes of neutropenia.

    Purpose of the Study:

    • To quantitatively assess neutrophil marrow cellularity in patients with neutropenia.
    • To identify specific marrow abnormalities contributing to or causing neutropenia.

    Main Methods:

    • Quantitative examination of neutrophil marrow cell number and distribution.
    • Ferrokinetic estimation of normoblast numbers and neutrophil-normoblast ratios from marrow biopsy sections.

    Main Results:

    • Only 2 out of 30 patients showed normal marrow response patterns to neutropenia.
    • Twenty-three patients displayed abnormal marrow cellularity, including hypoplastic mitotic pools or altered cell ratios.
    • Observed abnormalities suggested marrow hypoplasia, impaired proliferation/release, or cell loss during development.

    Conclusions:

    • Diverse disorders of bone marrow function are common in patients with neutropenia.
    • Neutropenia presents a significant area for studying neutrophil marrow physiology and pathology.

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