Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP upright and lateral views of the chest provided . Hyperinflation with prominent retrosternal clear space suggests COPD . No focal consolidation concerning for pneumonia . No large effusion or pneumothorax . No overt signs of edema . Cardiomediastinal silhouette appears normal . Bony structures are intact . No free air is seen below the right hemidiaphragm .
    OUTPUT:
    
COPD without superimposed pneumonia .