April 18, 2010

Ultrasound Features of Malignant Breast Mass

An ultrasound image shows an irregular solid mass with malignant features including ill-defined border, microlobulations, spiculations (seen as hyperechoic band around the mass), taller than wide and angular margin. This was confirmed to be invasive ductal carcinoma at biopsy.

US Features of Malignant Breast Mass
  • Marked hypoechogenicity
  • Spiculation: highest positive predictive value for malignancy
  • Taller than wide
  • Angular margin
  • Shadowing
  • Microlobulation
  • Duct extension
  • Calcifications
  • Branch pattern
Cardenosa G. Breast imaging companion, 2nd edition, 2000.

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