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Where does breast cancer develop?

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Breast cancer develops in the breast tissue, primarily in the milk ducts (ductal carcinoma) or glands (lobular carcinoma). The cancer is still called and treated as breast cancer even if it is first discovered after the cells have travelled to other areas of the body. In those cases, the cancer is referred to as metastatic or advanced breast cancer.

From: Breast Cancer WebMD Medical Reference

SOURCES:

American Cancer Society: "Learn about Cancer: Breast Cancer."

National Cancer Institute: "Breast Cancer."

CDC: "Breast Cancer."

Reviewed by Laura J. Martin on March 8, 2019

SOURCES:

American Cancer Society: "Learn about Cancer: Breast Cancer."

National Cancer Institute: "Breast Cancer."

CDC: "Breast Cancer."

Reviewed by Laura J. Martin on March 8, 2019

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How does breast cancer develop?

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