Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are hyper expanded and show mild blunting of the right costophrenic angle . The cardiomediastinal silhouette and hilar contours are normal . Clips and sternal sutures related to CABG are noted .
    OUTPUT:
    
Mild blunting of the right costophrenic angle may be related to a small effusion . No focal consolidation . Hyperexpanded lungs could be related to COPD .