Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Interval placement of a new right central venous catheter terminates at the cavoatrial junction . There is no pneumothorax . There are low lung volumes . Moderate enlargement of the cardiac silhouette is unchanged . There is pulmonary vascular congestion with interval increase in the opacification of the right lung base , possibly representing pulmonary edema , atelectasis or infection . Aortic arch calcifications are noted . Midline sternal wires are intact and well aligned .
    OUTPUT:
    
Right central venous catheter terminates at the cavoatrial junction . Moderate cardiomegaly . Interval increase in the opacification of the right lung base , possibly representing pulmonary edema , atelectasis or infection .