Was diagnosed with stage 2 breast cancer Feb 2010. Had a lumpectomy and 14 lymph nodes removed, two were positive.  Did 5 rounds of chemo and 8 weeks of radiation.  Uterus removed in 2000 and ovaries in Oct. of 2010.  Experiencing sever lower back pain, finishing steroids and muscle relaxes with really no relief.  My mother died at 55 with breast cancer and was diagnosed at age 47.  I was diagnosed at 46 and genetic test came back negative.  Nursed 7 children for a year each, dont smoke, wine once in awhile, never over weight, very active.  Still have my port in, every 4 months with onocologist , 6 months with surgeon, 6 months with GYN and now once a year with radiation dr.  Onocologist suggested during another MRI on lower back and hips?
Probably the first thing to rule out as a cause of backache here is secondaries in spine due to metastasis from breast.theirs why the doctor asked for MRI. If any other causes of backache like disc prolapse can also be known with MRI.