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DCIS means that some cells in the lining of the ducts of the breast tissue have started to turn into cancer cells. These cells are all contained inside the ducts. They have not started to spread into the surrounding breast tissue.
If you're struggling to find what you need, call our Support line on 7 days a week, 8am-8pm. Ductal carcinoma in situ DCIS is the earliest possible form of breast cancer. It needs to be treated but is not life-threatening.
Despite the fact that its name includes the term "carcinoma," LCIS is not a true breast cancer. Rather, LCIS is an indication that a person is at higher-than-average risk for getting breast cancer at some point in the future. LCIS is restricted to the lobules. DCIS is the most common kind of carcinoma cancer in situ.
Each breast contains 15 to 20 lobes of glandular tissue, arranged like the petals of a daisy. The lobes are further divided into smaller lobules that produce milk for breast-feeding. Small tubes ducts conduct the milk to a reservoir that lies just beneath your nipple.
Breast cancer is classified into different types based on how the cells look under a microscope. Most breast cancers are carcinomas, a type of cancer that begins in the linings of most organs. Ductal carcinoma in situ DCIS is characterized by cancerous cells that are confined to the lining of the milk ducts and have not spread through the duct walls into surrounding breast tissue.
Non-invasive cancer that originates in lobules or ducts. Typically asymptomatic and diagnosed at screening. Tamoxifen can be used to prevent ductal carcinoma in situ DCIS disease progression and lobular carcinoma in situ LCIS progression to invasive carcinoma.
Ductal carcinoma in situ DCISalso known as intraductal carcinomais a pre-cancerous or non-invasive cancerous lesion of the breast. In DCIS, abnormal cells are found in the lining of one or more milk ducts in the breast. In situ means "in place" and refers to the fact that the abnormal cells have not moved out of the mammary duct and into any of the surrounding tissues in the breast "pre-cancerous" refers to the fact that it has not yet become an invasive cancer.
Ductal carcinoma in situ DCIS is non-invasive breast cancer. Ductal means that the cancer starts inside the milk ducts, carcinoma refers to any cancer that begins in the skin or other tissues including breast tissue that cover or line the internal organs, and in situ means "in its original place. When you have had DCIS, you are at higher risk for the cancer coming back or for developing a new breast cancer than a person who has never had breast cancer before.