Fig. 9
From: Imaging findings and classification of the common and uncommon male breast diseases
Benign neoplastic breast lesions. a, b Intraductal papilloma. Retroareolar well-defined solid nodule (red arrows) within a dilated duct is demonstrated in a 40-year-old patient with nipple discharge (a). Doppler ultrasound shows stalk of internal vascularity within the solid nodule (b). c, d Myofibroblastoma. Non-contrast CT scan displays well-defined round incidental mass (blue arrows) in right breast (c). US image shows circumscribed mass with mixed echogenicity and posterior acoustic shadowing due to internal fat content (d). e, f Pilomatricoma. Well-defined, lobulated complex mass with solid and cystic areas, hyperechoic spots, posterior acoustic shadowing (yellow arrows) and internal vascularity