Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is been interval placement of a dual - lumen central venous catheter with tip in the mid SVC . No pneumothorax . Mild to moderate enlargement of the cardiac silhouette is re - demonstrated . The mediastinal and hilar contours are similar . Mild to moderate pulmonary edema is unchanged as are moderate size left and small right pleural effusions . Bilateral lower lobe opacities likely reflect atelectasis , unchanged .
    OUTPUT:
    
Interval placement of dual - lumen central venous catheter with tip in the mid SVC . No pneumothorax . Persistent mild to moderate pulmonary edema and moderate size left and small right pleural effusions . Bibasilar atelectasis also remains unchanged .