Benign Breast Lesions That Mimic Cancer: Determining Radiologic-Pathologic Concordance

Julia Mario, BA; Shambhavi Venkataraman, MD; Vandana Dialani, MD; Priscilla J. Slanetz MD, MPH


Appl Radiol. 2015;44(9):28-32. 

In This Article


Myofibroblastoma is a benign tumor of myofibroblasts and is more common in men than women.[33] Clinically, it presents as a single, slow-growing, painless and mobile mass. On mammography, it appears as a well-defined, round or ovoid dense mass ranging from 1 to 4 cm in diameter (Figure 4c).[34] On ultrasound, it typically presents as a solid, circumscribed, homogeneously hypoechoic mass; however, it may also present as an ill-defined mass with posterior shadowing (Figure 4d).[35] Most clinicians recommend surgical excision of these lesions as well.