I was diagnosed with cancer my right breast, and had a double mastectomy with immediate expander placement. I just had replacement surgery, with silicone implants. I will now need to have follow-up MRI's every 2-3 years to make sure that they are still okay. I know that my insurance was obligated (by law) to pay for the reconstruction/implants because it was breast cancer, are they ALSO obligated by law to cover the follow-up MRI's and subsequent implant replacement(s), if deemed medically necessary?