Fig. 24

Solitary intraductal papilloma. A 68-year-old woman with a palpable retroareolar nodule in her left breast. a Normal findings on craniocaudal and mediolateral oblique 2D mammograms. b Ultrasound shows a cystic lesion with a solid nodule inside it (arrow) adjacent to the nipple (N). c Hematoxylin-eosin stain (× 4) shows branching intraductal structures consisting of a central fibrovascular axis surrounded by epithelial and myoepithelial cells