A rare case of myofibroblastoma in an older male.

Myofibroblastoma is a rare benign breast stromal tumor comprised of fibroblasts and myofibroblasts, most commonly presenting in postmenopausal women and older men. This report discusses the case of a 69-year-old male diagnosed with myofibroblastoma after mammography, targeted ultrasound, and core needle biopsy of a retroareolar mass. The features of myofibroblastoma are presented.