Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A left subclavian central venous catheter projects over the superior SVC . Lung volumes remain low , and lungs remain clear except for persistent right basilar atelectasis adjacent to an elevated hemidiaphragm . The heart and mediastinum are magnified by the projection . Coarse right upper quadrant hepatic calcifications are unchanged . There is also a new trace right pleural effusion .
    OUTPUT:
    
A new small right pleural effusion is the only appreciable change from the study of 5 days ago .