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atypical lobular hyperplasia

(ay-TIH-pih-kul LAH-byoo-ler HY-per-PLAY-zhuh)
A benign (not cancer) condition in which there are more cells than normal in the breast lobules and the cells look abnormal under a microscope. Having atypical lobular hyperplasia increases the risk of breast cancer. Also called ALH and atypical lobular breast hyperplasia.
Search NCI's Dictionary of Cancer Terms