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Related Experiment Videos

Polyploid mesothelial cells in pleural fluid.

K Isoda, Y Hamamoto

    Acta Pathologica Japonica
    |July 1, 1983
    PubMed
    Summary
    This summary is machine-generated.

    Polyploid mesothelial cells with abnormal DNA content are common in non-malignant pleural fluids, especially with conditions like edema or hemorrhage. Relying solely on DNA cytophotometry for malignancy diagnosis is not advised.

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    Area of Science:

    • Cytopathology
    • Oncology
    • Cell Biology

    Background:

    • Mesothelial cells line the pleural cavity.
    • Abnormal DNA content in cells can indicate malignancy.
    • Cytophotometry measures cellular DNA content.

    Purpose of the Study:

    • To investigate the Feulgen-DNA content of mesothelial cells in non-malignant pleural fluids.
    • To determine the prevalence and characteristics of polyploid mesothelial cells in these fluids.
    • To assess the diagnostic utility of DNA cytophotometry for malignancy in pleural effusions.

    Main Methods:

    • Cytophotometric analysis of Feulgen-stained DNA in mesothelial cells.
    • Examination of pleural fluid samples from 21 non-malignant autopsy cases.
    • Correlation of polyploid cell occurrence with clinical and pathological findings.

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    Main Results:

    • Polyploid mesothelial cells (greater than tetraploid DNA content) were found in 62% of cases.
    • The rate of polyploid cells was higher in cases with uremia or congestive cardiac failure.
    • Increased polyploid cells correlated with pleural edema, hemorrhage, and fibrin precipitation.
    • Mitotic abnormalities were suggested as the cause of polyploid cell formation.

    Conclusions:

    • Polyploid mesothelial cells are not rare in non-malignant pleural fluids.
    • Their presence is associated with specific pleural pathological changes.
    • Diagnosis of malignancy should not rely solely on DNA cytophotometry in pleural fluids.