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    Breast Cancer Types

    Breast Cancer Types

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    Topic Overview

    Breast cancer is the abnormal growth of the cells that line the ducts and lobes of the breast. The main types of breast cancer are:

    • Ductal carcinoma, which is cancer that begins in the ducts of the breast. This is the most common type of breast cancer.
    • Lobular carcinoma, which is cancer that begins in the lobes of the breast. This is the second most common type.
    • Some breast cancer is a mixture of both ductal and lobular carcinoma.

    There are also some less common types of breast cancer, such as inflammatory breast cancer .

    When abnormal cells in the lining of a duct or lobe of the breast haven't spread, they are said to be "in situ" (say "in-SY-too").

    Credits

    ByHealthwise Staff
    Primary Medical Reviewer Sarah Marshall, MD - Family Medicine
    Specialist Medical Reviewer Douglas A. Stewart, MD - Medical Oncology

    Current as ofNovember 14, 2014

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