Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Hyperexpansion of the lungs suggestive of chronic obstructive pulmonary disease appears unchanged from prior . No confluent consolidation is identified . There is no pulmonary edema or large pleural effusions . Cardiomediastinal and hilar contours are within normal limits . There is no pneumothorax .
    OUTPUT:
    
Hyperexpanded lungs without superimposed acute process