Should I Be Concerned About An MRI With Contrast On

Should I be concerned about an MRI with contrast on the lumbar spine. Between the doctor's receptionist and the radiology department at the hospital I am receiving conflicting information. I had kidney failure twenty years ago from NSAID's, after which I can a complete recovery. I also had a dermato carcinoma protuberans in the cheek that was removed with MOHs surgery. In addition I have seven vertebrae fused and gave had both hips and knees replaced. Should I be concerned?