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Ductal Carcinoma in Situ (DCIS)

Ductal Carcinoma in Situ (DCIS)

Ductal carcinoma in situ (DCIS or intraductal carcinoma) is a very early form of noninvasive breast cancer that begins in the lining of the small milk ducts that drain milk out of the breast through the nipple. It usually does not cause a lump in the breast and is seen as small calcium deposits (microcalcifications) on a mammogram.

Most experts consider DCIS a precancerous condition that may progress to invasive breast cancer. Unfortunately, doctors do not know how to tell which cases of ductal carcinoma in situ will progress and which will not.

Treatment options for DCIS include mastectomy or lumpectomy with radiation. The medicine tamoxifen may be used to reduce the risk of future breast cancer.

Current as of: June 28, 2013

Author: Healthwise Staff

Medical Review: Sarah Marshall, MD - Family Medicine & Douglas A. Stewart, MD - Medical Oncology

This information does not replace the advice of a doctor. Healthwise, Incorporated disclaims any warranty or liability for your use of this information. Your use of this information means that you agree to the Terms of Use. How this information was developed to help you make better health decisions.

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