Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Low lung volumes accentuate cardiomegaly and results in crowding of the bronchovascular structures . Left lower lobe consolidation appears worse compared to 10 days prior . Significant gaseous distention of visualized loops of large bowel is essentially unchanged . Incidental note is made of mild bilateral acromioclavicular degenerative changes . Old posterior right rib fractures are noted .
    OUTPUT:
    
1 . Left lower lobe consolidations are concerning for infection , alternatively atelectasis . 2 . Significant gaseous distention of visualized loops of large bowel is unchanged .