A compendium of male breast imaging: The road less traveled

Figure 20  Invasive lobular carcinoma in a 65-year-old male with a hard retroareolar lump. A: Mediolateral oblique; B: Craniocaudal mammography views showing an irregular high-density mass with spiculated margins, few punctate calcific foci and surrounding architectural distortion. Nipple retraction and overlying skin thickening are also observed; C: Ultrasound; D: Elastography images show an irregular mass with angular margins, which appears hard on elastography; E: Histopathology (hematoxylin and eosin, × 40); F: E-cadherin images show medium to small dyscohesive cells that lack E-cadherin expression.