Health Library

Our Health Library information does not replace the advice of a doctor. Please be advised that this information is made available to assist our patients to learn more about their health. Our providers may not see and/or treat all topics found herein.

Ductal carcinoma in situ (DCIS)

Ductal carcinoma in situ (DCIS) is the growth of abnormal cells in the milk ducts of the breast. It is a very early form of noninvasive breast cancer.

DCIS is seen as small calcium deposits (microcalcifications) on a mammogram.