I have a similar concern as you. I was diagnosed with LCIS for which I chose a double mastectomy in hope of reducing the risk as much as possible. My LCIS was originally discovered through a mammogram. Now that I have the double mastectomy, my concern is how to monitor from this point on for abnormalities since there is always some remaining breast tissue. The best thing to do I think is to monitor with a MRI every so few years and hope that we can catch the LCIS before it becomes a full blown lobular cancer. I am interested to know what your surgeon/oncologist have to say about it.