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Case Reports in Pathology
Volume 2015, Article ID 172750, 3 pages
Case Report

Pleomorphic Adenoma of Breast: A Radiological and Pathological Study of a Common Tumor in an Uncommon Location

1Department of Pathology and Laboratory Medicine, Weill Cornell Medical College, New York, NY 10065, USA
2Department of Pathology, The Queen’s Medical Center, Honolulu, HI 96813, USA

Received 29 December 2014; Accepted 7 February 2015

Academic Editor: Sami Shousha

Copyright © 2015 Paula S. Ginter et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Pleomorphic adenoma occurs commonly in the major salivary glands but is uncommonly encountered in the breast. In both of these locations, the tumor is typically grossly circumscribed and has a “mixed” histological appearance, being composed of myoepithelial and epithelial components amid a myxochondroid matrix. Herein, we report a case of pleomorphic adenoma of the breast which was preoperatively thought to represent a fibroadenoma on clinical and radiological grounds. It is the rarity of the tumor in the breast, rather than its histological appearance, that causes diagnostic difficulty.