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What is ductal carcinoma in situ (DCIS)?

Stuart A. Linder, MD
Plastic Surgery
DCIS or ductal carcinoma is situ is a early stage breast cancer that is normally found in the milk ducts but has not spread throughout the breast or lymph node. It can normally be found on mammogram and diagnosed with fine needle aspiration or core needle biopsy. Treatment options depending on size of tumor will include lumpectomy with radiation vesus simple mastectomy. Positive hormone receptor (estrogen and progesterone) will often respond to Tamoxifen. The cure rate with appropriate treatment is approximately 100%.
Ductal carcinoma in situ (DCIS) is also known as intraductal carcinoma or noninvasive breast cancer. DCIS is confined to the ducts and has not invaded surrounding tissue. As the use of screening mammography has increased in the United States, the frequency of DCIS diagnosis has increased significantly. It is the most common subgroup of noninvasive breast cancer; one out of five cases of breast cancer is DCIS.

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.