Fibroadenoma breast

  • Most common benign tumor
  • Adult and juvenile form
  • Contains stromal and epithelial element
  • Well circumscribed, oval  lesions with edge shadowing, posterior enhancement on ultrasound, wide than tall. Hypermobile under the ultrasound probe
  • Isointense to breast in T2 and can be seen to rapidly enhance post i.v. contrast administration
  • Calcifications are commonly seen, causing edge shadowing
  • Pseudocapsule due to compression of adjacent parenchyma