Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Persistent flattening of both hemidiaphragms is compatible with chronic obstructive pulmonary disease . Bibasilar scarring is unchanged , with atelectasis at the right lung base . Lungs are otherwise clear without focal consolidation . The cardiomediastinal silhouette and hilar contours are stable . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
No focal consolidation . Chronic obstructive lung disease .