Adenomyoepithelioma is very rare. Because of its rarity, adeonomyoepithelioma may present a diagnostic challenge to the radiologists and there is a little information on the diagnosis and treatment of this condition. I report on two patients with benign and malignant adenomyoepitheliomas which represent breast masses on mammograms and ultrasonograms. The diagnosis was confirmed by immunohistochemical study of the resected specimens.