[Breast tumor with myoepithelial cells. Apropos of a case report].

A case of malignant myoepithelioma of the breast is reported. Mammographic and echographic features are not typical. Diagnosis of this rare lesion mainly relies on histological and immunocytological findings. This potentially malignant tumor must be totally resected given the risk of recurrence. To the author's knowledge, this is the third report of a breast myoepithelioma that has metastasized.