Nodular pseudoangiomatous stromal hyperplasia in a 22-year-old woman: a case report

Pseudoangiomatous breast stromal hyperplasia (PASH) is a rare benign mastopathy, characterized by its particular histological aspect with the presence of pseudovascular clefts in a collagenous stroma. Immunohistochemical analysis is the cornerstone of the diagnosis. The PASH mainly affects premenopausal women and often goes unnoticed, its discovered by chance during pathological examination. Pseudoangiomatous stromal hyperplasia can manifest itself in several clinical forms, but rarely in the nodular form of PASH. This lesion deserves to be recognized in daily practice, so as not to be confused with a low-grade angiosarcoma. The object of this article is to clarify this rare benign mastopathy and it’s different clinical, radiological, and anatomopathological aspects.