This is interesting. I did not know that lymph nodes showed up on an MRI of the breast. My lymph nodes were taken out at the time of my lumpectomies and tested...all clear thank God. With my last cancer, two MRIs said what had showed up on a mamo was benign twice. I insisted on a biopsy and had DCIS, IDC and a fibroadenoma. Your test results are only as good as the Dr reading them. I have developed a mistrust for radiologists. Even if they do bad work, nothing happens to them. It all seems to be a crap shoot.