Dictionary of Cancer Terms
View in Spanish: Cáncer de mama triple negativo
Triple-negative breast cancer (TRIH-pul-NEH-guh-tiv brest KAN-ser)
Describes breast cancer cells that do not have estrogen receptors, progesterone receptors, or large amounts of HER2/neu protein. Also called ER-negative PR-negative HER2/neu-negative and ER-PR-HER2/neu-.
Source: National Cancer Institute Dictionary of Cancer Terms, available at www.cancer.gov/dictionary.