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Dictionary of Cancer Terms

View in Spanish: Cáncer de mama infiltrante

Infiltrating breast cancer (IN-fil-TRAY-ting brest KAN-ser)
Cancer that has spread from where it started in the breast into surrounding, healthy tissue. Most infiltrating breast cancers start in the ducts (tubes that carry milk from the lobules to the nipple). Infiltrating breast cancer can spread to other parts of the body through the blood and lymph systems. Also called invasive breast cancer.

Source: National Cancer Institute Dictionary of Cancer Terms, available at www.cancer.gov/dictionary.