stage 0 breast carcinoma in situ

In stage 0, abnormal cells are found in the breast. There are 2 types of stage 0: ductal carcinoma in situ (DCIS) and lobular carcinoma in situ (LCIS). DCIS is a noninvasive, precancerous condition in which abnormal cells are found in the lining of a breast duct (a tube that carries milk to the nipple). The abnormal cells have not spread outside the duct to other tissues in the breast. In some cases, DCIS may spread to other tissues, although it is not known how to predict which lesions will become invasive cancer. LCIS is a condition in which abnormal cells are found in the lobules (small sections of tissue involved with making milk) of the breast. This condition seldom becomes invasive cancer; however, having LCIS in one breast increases the risk of developing breast cancer in either breast.

English dictionary of cancer terms . 2015.

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