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Breast Cancer Treatment (PDQ®): Treatment - Health Professional Information [NCI] - Cellular Classification of Breast Cancer

The following is a list of breast cancer histologic classifications.[1] Infiltrating or invasive ductal cancer is the most common breast cancer histologic type and comprises 70% to 80% of all cases.

  • Carcinoma, NOS (not otherwise specified).
  • Ductal.
    • Intraductal (in situ).
    • Invasive with predominant intraductal component.
    • Invasive, NOS.
    • Comedo.
    • Inflammatory.
    • Medullary with lymphocytic infiltrate.
    • Mucinous (colloid).
    • Papillary.
    • Scirrhous.
    • Tubular.
    • Other.
  • Lobular.
    • In situ.
    • Invasive with predominant in situ component.
    • Invasive.[2]
  • Nipple.
    • Paget disease, NOS.
    • Paget disease with intraductal carcinoma.
    • Paget disease with invasive ductal carcinoma.
  • Other.
    • Undifferentiated carcinoma.

The following are tumor subtypes that occur in the breast but are not considered to be typical breast cancers:

Recommended Related to Breast Cancer

Early Stage Breast Cancer (Stage I and II)

Surgery is recommended as the primary treatment of breast cancer in pregnant women. Since radiation in therapeutic doses may expose the fetus to potentially harmful scatter radiation,[1] modified radical mastectomy is the treatment of choice. Conservative surgery with postpartum radiation therapy has been used for breast preservation.[2] An analysis has been performed that helps to predict the risk of waiting to have radiation.[3,4] If adjuvant chemotherapy is necessary, it should not be given during...

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  • Phyllodes tumor.[3,4]
  • Angiosarcoma.
  • Primary lymphoma.

References:

  1. Breast. In: Edge SB, Byrd DR, Compton CC, et al., eds.: AJCC Cancer Staging Manual. 7th ed. New York, NY: Springer, 2010, pp 347-76.
  2. Yeatman TJ, Cantor AB, Smith TJ, et al.: Tumor biology of infiltrating lobular carcinoma. Implications for management. Ann Surg 222 (4): 549-59; discussion 559-61, 1995.
  3. Chaney AW, Pollack A, McNeese MD, et al.: Primary treatment of cystosarcoma phyllodes of the breast. Cancer 89 (7): 1502-11, 2000.
  4. Carter BA, Page DL: Phyllodes tumor of the breast: local recurrence versus metastatic capacity. Hum Pathol 35 (9): 1051-2, 2004.

    This information is produced and provided by the National Cancer Institute (NCI). The information in this topic may have changed since it was written. For the most current information, contact the National Cancer Institute via the Internet web site at http:// cancer .gov or call 1-800-4-CANCER.

    WebMD Public Information from the National Cancer Institute

    Last Updated: September 04, 2014
    This information is not intended to replace the advice of a doctor. Healthwise disclaims any liability for the decisions you make based on this information.
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