Case 21 Answer
A suspicious irregular density is present in the right subareolar area. An ultrasound is recommended for further evaluation of the mass. The diagnostic mammogram in a man with a palpable lump either shows benign gynecomastia (the vast majority of the time) OR a suspicious mass. The benign entities seen in women such as cysts and fibroadenomas are generally not seen in men.
This mass most likely represents