atypical lobular hyperplasia

Definition / meaning of atypical lobular hyperplasia

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.

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Source(s):

The Web site of the National Cancer Institute (http://www.cancer.gov/)

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