Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiomediastinal contours are within normal limits and unchanged since ___ radiograph . Low lung volumes accentuate the bronchovascular structures . Allowing for this factor , lungs are grossly clear , and there is no definite pleural effusion . Minimal blunting of lateral left costophrenic sulcus is unchanged and suggestive of pleural thickening . Post vertebroplasty changes are noted in the upper lumbar spine at a site of prior compression fracture .
    OUTPUT:
    
No acute cardiopulmonary radiographic abnormality .