Case Reports in Pathology / 2013 / Article / Fig 2

Case Report

Gynecomastia-Like Hyperplasia of Axillary Ectopic Breast Tissue in a Young Female

Figure 2

(a) Histopathology examination revealed an ill-defined lesion composed of irregularly proliferating mammary ducts with no lobules. The surrounding stroma was reactive and exaggerated. (b) The lesion extended adjacent to the axillary skin adnexa. Evenly distributed irregular ducts with periductal stromal proliferation were present, without atypia, consistent with a diagnosis of gynecomastia-like hyperplasia within an ectopic mammary tissue deposit.

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