Definition of ductal carcinoma in situ - NCI Dictionary of Cancer Terms

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ductal carcinoma in situ (DUK-tal KAR-sih-NOH-muh in SYE-too)

DCIS. A noninvasive condition in which abnormal cells are found in the lining of a breast duct. The abnormal cells have not spread outside the duct to other tissues in the breast. In some cases, ductal carcinoma in situ may become invasive cancer and spread to other tissues, although it is not known at this time how to predict which lesions will become invasive. Also called DCIS and intraductal carcinoma.

Previous Definitions:	DU 145, dual energy x-ray absorptiometric scan, dual x-ray absorptiometry, duct, ductal carcinoma
Next Definitions:	ductal lavage, Dukes A colorectal cancer, Dukes B colorectal cancer, Dukes C colorectal cancer, Dukes classification