A study of 159 women, including BRCA carriers, who had bilateral mastectomy with reconstruction, underwent breast MRI screening. The results showed few women had detection of breast cancer through MRI, after their bilateral mastectomy. These results support the recommendation against screening MRI in women who have had bilateral mastectomy with reconstruction due to a diagnosis of cancer or to reduce their risk of developing breast cancer.
Check out the full article at https://www.ncbi.nlm.nih.gov/pubmed/30511241