malignant mesothelioma


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  • Gross

    • testicular
      • thickened, nodular tunica vaginalis

  • Histology

    • architecture: tubulopapillary, solid sheets
    • cytology: eosinophilic, prominent nucleoli, variable size in sheet areas
    • +/- sarcomatoid element: fascicles of spindle cells

  • Stains

    • CK+ in both epithelial and sarcomatoid elements
    • calretinin+
    		•