Fact-sheet: Fibroadenoma of breast


Updated on 08/25/2020 at 4:46 PM

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Definition

Common benign tumor characterized by mixed proliferation of epithelial and stromal cells.

Occurs in all age groups (especially young women, 20 to 30 years)

Clinical features

  • Firm nodule with well-defined margins
  • Often painless

Radiography

Mammography:

  • Well-circumscribed round or oval opacity
  • +/- radiolucent halo, coarse popcorn-like calcifications

Ultrasound

  • Oval nodule with long axis parallel to the skin plane
  • Homogeneous, mildly hypoechoic echostructure with posterior enhancement
  • Regular, well-defined margins with lateral shadowing
  • Mobile mass under the probe.
    No alteration of adjacent structures.
  • Absence of a hyperechoic rim
  • Moderate contrast, with brightness slightly lower than that of the adjacent tissue.

MRI

Rarely indicated

  • Iso T1
  • Iso or slightly hyperintense T2
  • Moderate and slow enhancement

Differential diagnosis

Phyllodes tumor