Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Normal cardiomediastinal contours . Interval improvement in bilateral perihilar airspace opacities with air bronchograms , particularly on the left , suggests improving noncardiogenic pulmonary edema . Peripheral , right upper lobe consolidation appears slightly worse , concerning for superimposed aspiration . There is no pneumothorax or pleural effusion .
    OUTPUT:
    
Improving bilateral perihilar opacities suggest improving noncardiogenic edema . Worsening right upper lobe consolidation suggests possible superimposed aspiration or evolving aspiration pneumonia , although asymmetrical edema is also possible .