Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Right - sided dual lumen central venous catheter tip terminates in the right atrium , unchanged . Mild to moderate enlargement of the cardiac silhouette is re - demonstrated . The mediastinal contour is unchanged . Moderate pulmonary edema is present , similar to that seen on the prior exam , with a new small left pleural effusion . Patchy opacities in the lung bases likely reflect areas of atelectasis . No pneumothorax is present . Clips project over the left axilla . There are no acute osseous abnormalities .
    OUTPUT:
    
Moderate pulmonary edema , similar to the previous study , with new small left pleural effusion . Bibasilar atelectasis .