Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Despite low lung volumes , there has been interval development of bilateral parenchymal opacities throughout the lung fields bilaterally , perhaps slightly worse on the left than the right . Cardiomediastinal silhouette is grossly unchanged . No displaced fractures identified . Posterior lumbar fixation hardware is partially visualized .
    OUTPUT:
    
Interval development of bilateral parenchymal opacities throughout the lungs . These findings may represent blossoming of bilateral infection , edema versus ARDS .