Medical Definition of Breast, infiltrating lobular carcinoma of the
Breast, infiltrating lobular carcinoma of the: The second most common invasive breast cancer. Infiltrating lobular carcinoma starts in the lobules, the glands that secrete milk, and then infiltrates surrounding tissue. Lobular carcinoma can occur in more than one site in the breast or in both breasts at the same time (a bilateral lobular carcinoma).
Last Editorial Review: 7/1/2016
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