Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There are low inspiratory volumes . The cardiomediastinal silhouette is unchanged . There is increased opacity at the left base , consistent with left lower lobe collapse and / or consolidation , possibly slightly worse . There is upper zone redistribution and mild vascular blurring , progressed from the prior film . The right lung base in costophrenic sulcus are grossly clear , except for subsegmental atelectasis . No pneumothorax is detected . Again seen are the rib fractures along the left upper chest wall . There is a small amount of newly visible pleural thickening in this area , consistent with edema / hemorrhage .
    OUTPUT:
    
1 . Left lower lobe collapse and / or consolidation , possibly slightly worse . The possibility of superimposed aspiration would be difficult to exclude . 2 . Mild CHF , increased compared with ___ . 3 . Left - sided rib fractures again noted , now with slight associated pleural thickening .