PASH


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  • Names

    • PASH
    • pseudoangiomatous stromal hyperplasia

  • Clinical

    • most common in premenopausal
    • can be mass-forming, but not common

  • Histology

    • slits lined with spindle cells
    • fibrous stroma
    • no mitosis

  • Etiology

    • myofibroblastic proliferation
    • provoked by progesterone

  • Stains

    • CD34+
    • CD31-
    • PR+ in stroma

  • Ddx

    		•