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.