Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is stable elevation of left hemidiaphragm with a corresponding left lower lobe atelectasis . There is mild right lower lobe atelectasis . There has been interval increase in left pleural effusion . Cardiomediastinal silhouette is obscured by pleural effusion . Moderate multilevel degenerative changes of the thoracic spine are noted . Patient is status post sternotomy with sternotomy wires in unchanged vertical alignment with no obvious hardware complications .
    OUTPUT:
    
Worsening left pleural effusion . No clear evidence of infection . Stable right basilar atelectasis and elevation of left hemidiaphragm .