alveolar adenoma


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  • Clinical

    • age 39-74
    • rare

  • Histology

    • unencapsulated, well circumscribed
    • multicystic
    • lining: cuboidal and hobnail
    • stroma: myxoid, collagenous

  • Stain

    • lining: CK, surfactant, TTF1+
    • stroma: focal SMA

  • Ddx

    		•