Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are relatively hyperinflated , suggesting chronic obstructive pulmonary disease . There is diffuse increase in interstitial markings bilaterally worrisome for moderate pulmonary edema . Bibasilar opacities are seen which could be due to infection and / or aspiration . No large pleural effusion is seen although trace effusions would be difficult to exclude . The cardiac silhouette is enlarged . Aorta is calcified and tortuous . No pneumothorax is seen .
    OUTPUT:
    
Moderate pulmonary edema . Bibasilar opacities , could pulmonary edema however , may also relate to underlying infection and / or aspiration . Enlarged cardiac silhouette .