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Related Experiment Videos

Pulmonary lymphomas: current concepts.

T V Colby, C B Carrington

    Human Pathology
    |October 1, 1983
    PubMed
    Summary
    This summary is machine-generated.

    Pulmonary pseudolymphomas are now viewed as indolent lymphomas, shifting from clinical to immunologic definitions. Most lymphomatoid granulomatosis cases are now considered malignant lymphomas due to diverse histology and extranodal lymphoma acceptance.

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    Area of Science:

    • Pulmonary pathology
    • Hematopathology
    • Immunohistochemistry

    Background:

    • Historically, pulmonary pseudolymphomas were defined by clinical behavior (aggressive).
    • Recent advances shifted definitions to immunologic criteria (clonal cell proliferation).
    • Extranodal lymphomas are increasingly recognized, impacting classification.

    Purpose of the Study:

    • To re-evaluate pulmonary pseudolymphomas based on new immunologic definitions.
    • To support the classification of lymphomatoid granulomatosis as malignant lymphoma.
    • To discuss criteria for recognizing and classifying pulmonary lymphoid lesions.

    Main Methods:

    • Review of clinical and immunologic definitions of lymphomas.
    • Histologic examination of pulmonary lymphoid lesions.

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  • Analysis of criteria for lymphoma classification.

    • Main Results:

    • Most pulmonary pseudolymphomas are reinterpreted as indolent lymphomas.
    • Lymphomatoid granulomatosis is increasingly recognized as a malignant lymphoma.
    • Diverse histologic appearances are characteristic of lymphomas.

    Conclusions:

    • The immunologic definition reclassifies many pulmonary pseudolymphomas.
    • Lymphomatoid granulomatosis should be considered a malignant lymphoma.
    • Standardized criteria are essential for classifying pulmonary lymphoid lesions.