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NCI Dictionary of Cancer Terms

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LIN   

  A condition in which abnormal cells are found in the lobules (glands that make milk) of the breast. This condition rarely becomes cancer. However, having LIN in one breast increases the risk of breast cancer in either breast. Types of LIN include atypical lobular hyperplasia and lobular carcinoma in situ (LCIS). Also called lobular intraepithelial neoplasia and lobular neoplasia.