INTRODUCTION: Adenomyoepithelioma of the breast is a rarely reported and mostly benign disease that seldom undergoes malignant transformation. PRESENTATION OF THE CASE: Here, we present a case of malignant adenomyoepithelioma of the breast in a patient who initially presented with pain following an excision procedure at local clinic. The condition was finally diagnosed after a third surgical procedure, pathologic analysis with hematoxylin and eosin staining, and immunohistochemistry analysis to detect smooth muscle actin and S100 expression. CONCLUSION: The patient developed no complications or recurrences after a total mastectomy with sentinel node dissection.
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Kim et al. (2019) studied this question.
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