<prompt> Answer this question truthfullyWhat are the management options for lobular carcinoma in situ LCIS in individuals with low and high risk of developing invasive breast cancer?  <response>: <reason> For individuals with low risk of developing invasive breast cancer, LCIS is managed with tamoxifen. Tamoxifen is a medication that is used to block the effects of estrogen on breast tissue and reduce the risk of developing breast cancer. For individuals with a high risk of developing invasive breast cancer, LCIS is managed with tamoxifen and prophylactic bilateral mastectomy. Prophylactic bilateral mastectomy is a surgical procedure that involves removing both breasts to reduce the risk of developing breast cancer. This approach is typically reserved for individuals with a very high risk of developing invasive breast cancer, such as those with a family history of the disease or a genetic mutation that increases the risk of breast cancer. 