What are the types of breast cancer?

Updated: Dec 27, 2019
  • Author: Pavani Chalasani, MD, MPH; Chief Editor: John V Kiluk, MD, FACS  more...
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Answer

The various types of breast cancers are listed below by percentage of cases:

  • Infiltrating ductal carcinoma is the most commonly diagnosed breast tumor and has a tendency to metastasize via lymphatics; this lesion accounts for 75% of breast cancers

  • Over the past 25 years, the incidence of lobular carcinoma in situ (LCIS) has doubled, reaching a current level of 2.8 per 100,000 women; the peak incidence is in women aged 40-50 years

  • Infiltrating lobular carcinoma accounts for fewer than 15% of invasive breast cancers

  • Medullary carcinoma accounts for about 5% of cases and generally occurs in younger women

  • Mucinous (colloid) carcinoma is seen in fewer than 5% of invasive breast cancer cases

  • Tubular carcinoma of the breast accounts for 1-2% of all breast cancers

  • Papillary carcinoma is usually seen in women older than 60 years and accounts for approximately 1-2% of all breast cancers

  • Metaplastic breast cancer accounts for fewer than 1% of breast cancer cases, tends to occur in older women (average age of onset in the sixth decade), and has a higher incidence in blacks

  • Mammary Paget disease accounts for 1-4% of all breast cancers and has a peak incidence in the sixth decade of life (mean age, 57 years)


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