Pseudoangiomatous nodular stromal hyperplasia of the breast (PASH) is a benign lesion characterized by the presence of anastomotic clefts lined with flattened cells giving a pseudo-vascular appearance [1], it is a rare pathological entity that manifests itself most often in perimenopausal patients. It poses a differential diagnostic problem with fibroadenoma, phyllodes tumor or hamartoma and it is the histology that confirms the diagnosis. We describe through a series of studies and also through our case the clinical, histological and therapeutic particularity of these tumors.