Papillary carcinoma of the breast: Breast cancer which shows complex cystic and solid echogenicity on Ultrasound

• Intraductal papillary carcinoma
  • intracystic papillary carcinoma (=encapsulated papillary carcinoma)
• Invasive papillary carcinoma

Older women

Slow growth, good prognosis

Less frequent axillary lymph node metastasis

Imaging finding

• Mostly circumscribed, complex cystic and solid mass, increased vascularity
• homogenous echogenicity – uniform internal echo texture
• intracystic, multiple fronds projecting into the lumen of the cyst (technically this is not cyst, but markedly dilated lumen)
• intracystic nodule or thickened septations are common

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