Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size is top - normal . The mediastinal and hilar contours are unremarkable . There is no pneumothorax or large pleural effusion . The lungs are well expanded . Increasing size and indistinctness of the pulmonary vasculature is consistent with mild pulmonary edema . Right basilar opacity may reflect atelectasis or early increased edema . There is no focal consolidation concerning for pneumonia . Left axillary dual lead pacemaker is present with tips terminating in unchanged positions .
    OUTPUT:
    
Mild pulmonary edema . Focal opacity at the right lung base may reflect atelectasis or increased edema . Top - normal heart size .