Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac silhouette is stably enlarged . The aorta is calcified . Left basilar opacity is noted in the left lower lobe may be due to overlying soft tissues , though pneumonia must be considered in the appropriate clinical context . Given difference in technique , edema is likely mildly improved since recent comparison . No large pleural effusion or pneumothorax identified .
    OUTPUT:
    
1 . Improved pulmonary edema from most recent comparison . 2 . Left lower lobe opacity may be consistent with pneumonia in the appropriate clinical context .