Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Right - sided dual lumen central venous catheter tip terminates at the lower SVC . Moderate enlargement of the cardiac silhouette persists . The aorta is tortuous and diffusely calcified . Mild pulmonary edema is new in the interval . Patchy bibasilar airspace opacities may potentially be reflective of atelectasis . No pleural effusion or pneumothorax is seen .
    OUTPUT:
    
Mild pulmonary edema . Patchy opacities in the lung bases may reflect atelectasis , but infection or aspiration is not excluded in the correct clinical setting .