Carcinoma in situ is an early form of carcinoma defined by the absence of invasion of surrounding tissues. In other words, the neoplastic cells proliferate in their normal habitat, hence the name 'in situ' . For example, carcinoma in situ of the skin, also called Bowen's disease is the accumulation of neoplastic epidermal cells within the epidermis only. For this reason, CIS will usually not form a tumor. Rather, the...
I had to have a mastectomy. If the DCIS is scattered throughout enough of the breast your best bet is to do a mastectomy. It significantly lowers your...