A 59-year-old female patient with a history of metastatic breast cancer presents with increasing lower back pain that has worsened over the last 2 months She denies any motor weakness in the lower extremities, numbness, tingling, or any bowel and bladder changes. Figure A shows the current radiographs of the lumbar spine. Figures B, C, and D are the MRI images of the lumbar spine. Figure E is a recent biopsy of one of the lesions seen on imaging. What would be the most appropriate treatment for the spinal lesions?