How are breast cancers classified?

Updated: May 24, 2018
  • Author: Peter Abdelmessieh, DO, MSc; Chief Editor: Marie Catherine Lee, MD, FACS  more...
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Answer

Answer

Breast cancers usually are epithelial tumors of ductal or lobular origin. Breast cancers are classified as follows:

  • Ductal carcinoma in situ (DCIS)
  • Lobular carcinoma in situ
  • Invasive ductal carcinoma (ductal breast cancer)
  • Invasive lobular carcinoma
  • Medullary carcinoma
  • Mucinous (colloid) carcinoma
  • Tubular carcinoma
  • Papillary carcinoma
  • Metaplastic breast cancer (MBC)
  • Phyllodes tumors
  • Mammary Paget disease (MPD)
  • Inflammatory breast cancer

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