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Case Reports in Medicine
Volume 2011, Article ID 162350, 3 pages
Case Report

Diabetic Mastopathy as a Radiographically Occult Palpable Breast Mass

1Department of General Internal Medicine, Mayo Clinic, Rochester, MN 55905, USA
2Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN 55905, USA
3Department of Radiology, Mayo Clinic, Rochester, MN 55905, USA
4Department of Surgery, Mayo Clinic, Rochester, MN 55905, USA

Received 16 June 2011; Accepted 5 September 2011

Academic Editor: Aaron S. Dumont

Copyright © 2011 Uma Thanarajasingam 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.


Diabetic mastopathy is an uncommon, benign disease of the breast that can occur in women with diabetes and clinically mimic breast cancer. We describe a patient with long-standing type 1 diabetes who presented with a palpable breast mass with negative imaging findings on mammography, ultrasonography, and breast MRI. Surgical biopsy and histopathology confirmed diabetic mastopathy. We use this case to highlight the recognition, radiographic features, pathology, and management of this benign breast condition and emphasize that, in diabetic patients, the differential diagnosis of a new breast mass should include diabetic mastopathy.