NURS 3102 Chapter 48.2: Types of Breast cancer
16 Feb 2017
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Document Summary
Lobular carcinoma in situ(lcis)is characterized by a proliferation of cells within the breast lobules. Lcis is usually found incidentally on pathologic diagnosis be-cause it cannot be seen on mammography and does not form a palpable lump. Ductal carcinoma in situ t is a non-invasive form of cancer (also called intraductal carcinoma). Dcis is frequently manifested on a mammogram with the appearance of calci cations, and it is considered breast cancer stage 0. If dcis is left untreated, there is an increased likelihood that it will progress to invasive cancer. In ltrating ductal carcinoma, the most common histologic type of breast cancer, accounts for 75% of all cases. The tumours arise from the duct system and invade the surrounding tissues. They often form a solid, irregular mass in the breast. In ltrating lobular carcinoma accounts for 5% to 10% of breast cancers.
