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low-grade ductal carcinoma in situ

(loh-grayd DUK-tul KAR-sih-NOH-muh in SY-too)
A condition in which cells that look mostly like normal cells under a microscope are found in the lining of a breast duct. The abnormal cells have not spread outside the duct to other tissues in the breast. Low-grade ductal carcinoma in situ tends to grow more slowly than intermediate-grade or high-grade ductal carcinoma in situ. It is also less likely to come back or become invasive breast cancer and spread to other tissues. Also called grade I DCIS, grade I ductal carcinoma in situ, and low-grade DCIS.
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