Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size is mildly enlarged but unchanged . Mediastinal and hilar contours are stable , with mild calcification of the aortic arch . Mild pulmonary edema is improved compared to the prior study . Minimal patchy opacities in the lung bases may reflect atelectasis . Small bilateral pleural effusions are noted , not significantly changed from the prior exam . There is no pneumothorax . No acute osseous abnormality is seen . Deformity of the sternum on the lateral view suggests an old healed fracture .
    OUTPUT:
    
Mild pulmonary edema , improved compared to the prior study with patchy bibasilar opacities , likely atelectasis , and small bilateral pleural effusions .