Comments:
Adenomyoepithelioma of the breast is related to ductal adenoma and also shares resemblance to mammary pleomorphic adenoma (mixed tumor). Other histologic features that may be seen include sebaceous metaplasia, squamous metaplasia, apocrine metaplasia, central fibrosis and necrosis. The infiltrative appearance (as seen here) may be mistaken for invasive carcinoma in needle core specimens.
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