Myofibroblastoma of the Breast: Ultrasonography, Mammography, and Magnetic Resonance Imaging Features With Pathologic Correlation.

Myofibroblastoma (MFB) of the breast is an uncommon benign stromal tumor. Herein, we present histopathologically proven MFB that hyperechoic well-defined breast mass in the ultrasonography and circumscribed high-density mass in mammography. Additionally, internal septations and hyperintense appearance on magnetic resonance imaging are very valuable findings in the differential diagnosis of MFB.