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lobular carcinoma in situ

(LAH-byoo-ler KAR-sih-NOH-muh in SY-too)
A condition in which abnormal cells are found in the lobules of the breast. This condition seldom becomes invasive cancer. However, having lobular carcinoma in situ in one breast increases the risk of developing breast cancer in either breast. Also called LCIS.
Lobular carcinoma in situ (LCIS); drawing shows a lobe, ducts, lobules, and fatty tissue in a cross section of the breast. Three separate pullouts show a normal lobe, a normal lobule, and a lobule with abnormal cells.Enlarge this image in new window
Lobular carcinoma in situ (LCIS). Abnormal cells are found in the lobules of the breast.
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