Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest were obtained . The cardiac silhouette remains enlarged . There is prominence of the interstitial markings bilaterally suggesting mild interstitial edema . A more confluent area of opacity at the right lung base is seen , non-specific , could relate to underlying edema ; however , consolidation due to aspiration or pneumonia is not excluded . The lungs remain hyperinflated , most consistent with chronic obstructive pulmonary disease . There is slight blunting of the right costophrenic angle which may be due to pleural thickening , although trace pleural effusion is not excluded .
    OUTPUT:
    
Persistent enlargement of the cardiac silhouette . Increase in interstitial markings bilaterally suggests mild pulmonary edema . More confluent opacity at the right lung base , underlying aspiration or infection is not excluded . Slight blunting of the right costophrenic angle may be due to pleural thickening and underlying COPD , although a trace effusion is not excluded .