Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP upright and lateral views of the chest are provided . The lungs are hyperinflated with midline sternotomy wires and mediastinal clips . There is a stent projecting in the upper abdomen . There is likely a tiny left pleural effusion . No signs of pneumonia or CHF . Cardiomediastinal silhouette is stable . Bony structures are intact .
    OUTPUT:
    
Probable emphysema with tiny left pleural effusion . No signs of pneumonia .