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Related Experiment Videos

Charcot-Leyden crystals in pleural fluids.

B Naylor, P M Novak

    Acta Cytologica
    |September 1, 1985
    PubMed
    Summary

    Charcot-Leyden crystals are rarely found in serous fluids. This study identified these crystals in eosinophilic pleural effusions, highlighting their presence in specific fluid types.

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    Area of Science:

    • Pathology
    • Cytology
    • Medical Diagnostics

    Background:

    • Charcot-Leyden crystals (CLCs) are typically associated with inflammatory conditions, particularly those involving eosinophils.
    • Their presence in serous effusions, such as pleural fluid, is uncommon and infrequently reported in medical literature.

    Purpose of the Study:

    • To document the occurrence of Charcot-Leyden crystals in serous effusions.
    • To investigate the specific context and conditions under which these crystals appear in pleural fluid.

    Main Methods:

    • Eight cases of pleural effusions were analyzed.
    • Toluidine blue staining was employed for wet film preparations of pleural fluid.
    • Samples were incubated at 4°C for a minimum of 24 hours before microscopic examination.

    Main Results:

    • Charcot-Leyden crystals were identified in all eight analyzed pleural fluid samples.
    • The effusions were characterized as eosinophilic, indicating a high concentration of eosinophils.
    • Crystal detection was facilitated by a prolonged standing time (≥24 hours) at low temperature (4°C).

    Conclusions:

    • Charcot-Leyden crystals can be found in eosinophilic pleural effusions.
    • Specific pre-analytical conditions, including delayed examination and refrigeration, may enhance the detection of these crystals in pleural fluid specimens.

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