primary effusion lymphoma


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  • Clinical

    • serous effusion without mass
    • HHV8+
    • associations: immunodeficiency, HIV, EBV, Kaposi sarcoma

  • Morphology

    • cytology: blast-like to anaplastic, prominent nucleoli, basophilic cytoplasm

  • Stains

    • positive: HHV8, frequent EBV, CD45
    • negative: B markers
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