Diabetic mastopathy is a recently described and uncommon benign entity occurring in young women with prolonged and complicated type 1 diabetes mellitus. Its clinical and radiological signs are not specific and often mimic a breast carcinoma. However, the benign nature of this lesion is easily recog-nized on histological examination, visualizing dense keloid-like fibrosis, lymphocytic lobulitis and ductitis with lymphocytic perivascular inflamma-tion, with or without epithelioid-like fibroblasts. Surgery can generally be avoided. The evolution of this entity is characterized by the risk of local growth, bilateralisation or recurrence after surgical treatment. Through this case we recall the clinical, radiological and outcome of this disease.
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