angiofibroma


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  • Clinical

    • male
    • age 6-29
    • nasal obstruction, epistaxis
    • locally aggressive

  • Histology

    • blood vessels
    • stroma varies
      • loose edematous
      • dense collagenous
      • can have stellate, spindle, angulated cells

  • Stains

    • CD31+ in endothelial cells
    • beta catenin+ (>75%)
    • vimentin+ in stroma

  • Ddx

    		•