Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiac silhouette size remains mildly enlarged . Dense atherosclerotic calcifications are noted at the aortic arch . The mediastinal and hilar contours are unchanged . There is mild pulmonary edema . Lung volumes are lower compared to the previous study with patchy opacities in the lung bases most reflective of atelectasis . No pneumothorax is identified . A trace left pleural effusion appears to be unchanged . Several clips are noted projecting over the left axillary region . There are multilevel mild to moderate degenerative changes noted in the thoracic spine along with S - shaped thoracolumbar scoliosis .
    OUTPUT:
    
Mild pulmonary edema and trace left pleural effusion with bibasilar atelectasis .