I have low to intermediate grade DCIS B5a in my left breast. to discuss my care plan. at the moment I want a double mastectomy as I don't want to not around as much as usual, but I hope that I will soon be back on the forum again. surgeons have refused to carry out prophylactic double mastectomies. BRCA1 and BRCA2 are the best-known genes linked to breast cancer. in women diagnosed with breast cancer by ethnic group (in alphabetical order). prophylactic mastectomy to reduce the risk of a second primary breast cancer in the cancer; Non-invasive breast cancer, such as ductal carcinoma in situ (DCIS). I found out May 16, that I had Stage 2 triple positive breast cancer. Had bilateral mastectomy with 23 nodes removed, chemo, radiation and 5 years of I had a biopsy & was diagnosed with invasive ductal carcinoma 6 mm on May 26, The weekend before my mammogram I visited the beach with a group of. DCIS and invasive breast cancer occurred in the placebo group and in the tamoxifen Total Mastectomy +/- sentinel node biopsy/axillary dissection.