[Pseudoangiomatous stromal hyperplasia: magnetic resonance findings in two cases].

Pseudoangiomatous stromal hyperplasia (PASH) is a benign breast tumor of uncertain etiology, although marked hormonal influence clearly plays a role in this disease. The differential diagnosis is important because this is an uncommon lesion that can simulate malignant lesions both at clinical and radiological examination, and even the histological results can be confusing. Little has been published regarding the MRI findings of PASH. The aim of this report is to describe the most remarkable findings observed at MRI in two patients with PASH.