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Genetic and Rare Diseases Information Center (GARD)

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Pseudoangiomatous stromal hyperplasia


* Not a rare disease
Other Names for this Disease
  • Mammary pseudoangiomatous stromal hyperplasia
  • PASH
  • Pseudoangiomatous stromal hyperplasia of the breast
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Is treatment available for pseudoangiomatous stromal hyperplasia (PASH)?

Surgical removal of the PASH lesions has been performed in some individuals. A wide margin around the mass may be removed to prevent recurrence. Although PASH lesions often grow over time and may recur, they are neither associated with malignancy (cancer) nor considered to be premalignant (pre-cancerous).[1] According to the medical text, CONN's Current Therapy 2007, approximately 7 percent of people experience a recurrence of PASH.[2]
Last updated: 7/19/2013

  1. Cyrlak D, Carpenter PM. Breast imaging case of the day: Pseudoangiomatous stromal hyperplasia. Radiographics. 1999; 19:1086-1088. Accessed 3/4/2008.
  2. Sukumvanich P, Borgen P. Diseases of the Breast. In: Rakel RE, Bope ET. CONN'S Current Therapy 2007, 59th ed. Philadelphia, PA: Saunders Elsevier; 2007..