Internal Medicine
Online ISSN : 1349-7235
Print ISSN : 0918-2918
ISSN-L : 0918-2918
Diabetic Mastopathy of Bilateral Breasts in an Elderly Japanese Woman with Type 2 Diabetes: A Case Report and a Review of the Literature in Japan
Munehiro HondaYasumichi MoriTsunehiro NishiKunio MizuguchiMiyuki Ishibashi
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2007 Volume 46 Issue 18 Pages 1573-1576


We report a case of diabetic mastopathy in an elderly woman with type 2 diabetes. The patient was a 69-year-old woman diagnosed with type 2 diabetes at the age of 33 years. She had been treated with insulin for 25 years, however, her blood glucose had been poorly controlled. She noticed bilateral breast lumps in September 2002. Mammography of the breast showed increased density in the glandular pattern and architectural distortion without focal mass and microcalcification. Ultrasonography of the breast showed an irregular-shaped hypoechoic mass with an acoustic shadow. As malignancy needed to be excluded, core needle biopsy was performed in the left breast and diabetic mastopathy was confirmed pathologically. Diabetic mastopathy is usually a complication of pre-menopausal type 1 diabetes and develops in a unilateral breast. This case developed in bilateral breasts in an elderly type 2 diabetic patient.

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© 2007 by The Japanese Society of Internal Medicine
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