Imaging Findings of Mammary Myofibroblastoma: A Rare Fat-Containing Entity

Mammary myofibroblastoma (MFB) is a rare benign stromal neoplasm; its imaging features are rarely reported and nonspecific. We retrospectively analyzed a case of pathologically proved breast MFB that revealed indistinct high-density mass in mammography and hypoechoic ill-defined breast tumor in ultrasonography. Meanwhile, hypointense appearance on T2-weighted imaging of magnetic resonance imaging and containing fat tissue might be very valuable characteristics in the differential diagnosis of breast MFB.