Authors: Zainab AlDawood, Amal Al-Habib, Miral Mashhour, Jamila Alazhri.
Pseudoangiomatous stromal hyperplasia (PASH) of the breast is a benign proliferative mesenchymal lesion with possible hormonal etiology. PASH is mostly identified as an incidental finding in the final histopathology of excised breast specimens. However, another less common presentation of PASH is the tumoriform palpable lesion. Herein, we report an unusual case of tumorous PASH of the breast with a deceiving clinical presentation mimicking invasive mammary carcinoma, and a surprising final histopathological diagnosis. Our report indicates that widening the differential diagnosis of a breast mass, to include rare and uncommon diseases, as well as careful decision making are essential measures to avoid overlooking a serious diagnosis or over treating a simple disease.
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