Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared with ___ at 01 :29 , small right and left effusions are new or better seen . A small amount of pleural fluid and / or thickening is also seen along the lower lateral right chest wall . There is bibasilar atelectasis . No definite consolidation , though confluence at the right lung base makes it difficult to exclude an early pneumonic infiltrate or focus of aspiration . The cardiomediastinal silhouette is enlarged , but unchanged . There is upper zone redistribution , but no overt CHF . There is hyperinflation , consistent with background COPD . Linear lucency overlies the left third posterior rib . While this most likely represents artifact due to multiple overlapping structures , in the appropriate clinical setting , a nondisplaced rib fracture could give rise to this appearance .
    OUTPUT:
    
Small right - greater - than - left pleural effusions are new or larger compared with ___ . No definite consolidation , but confluent opacity at the right lung base makes it difficult to exclude an early pneumonic infiltrate or focus of aspiration . Linear lucency overlying left third posterior rib --___ artifact due to overlapping structures . If the patient has focal tenderness in this location , the nondisplaced rib fracture would be considered . Upper zone redistribution . Doubt overt CHF . No pneumothorax detected .