A Case of Adenomyoepithelioma of the Breast in an 18-year-old Female

Abstract

An 18-year-old female patient presented with a mass in the upper inner quadrant of the right breast that was accidentally discovered 10 months prior to presentation during self-examination. Ultrasonography revealed a 50 mm hypoechoic mass, and magnetic resonance imaging revealed a regionally concentrated area. Histopathological examination using a core needle biopsy suggested a benign tumor ; however, the histological type could not be determined. The patient was then referred to our hospital for surgery. A lumpectomy was performed, and the histopathological examination revealed proliferation of small glandular ducts with a biphasic pattern of glandular epithelial and myoepithelial cells, leading to a diagnosis of adenomyoepithelioma of the breast. Herein, we report a case of adenomyoepithelioma of the breast in an 18-year-old female along with literature review.