Pleomorphic Adenoma of the Breast with Atypical Hyperplasia May Originate from Progenitor Cells: A Case Report and Review of the Literature
1. Abstract 1.1. Aims: Pleomorphic adenoma (PA) of the breast in association with severe atypical hyperplasia is exceedingly rare, and supports the opinion that breast PA is not always benign. We report a case of breast PA with severe atypical hyperplasia of squamous epithelium and discuss its histological origin, morphological characteristics, and biological behavior. Methods […]