Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There has been slight interval improvement of the right small - to - moderate pleural effusion . There is no pneumothorax . No new focal consolidations are seen . The heart size is top normal . The hilar and mediastinal contours are unremarkable . The patient is status post median sternotomy for CABG . Again seen is a dual ventricular pacemaker with the leads terminating in the expected locations of the right atrium , right ventricle , and epicardium of the left ventricle . The left lung is clear .
    OUTPUT:
    
Slight interval improvement of the right pleural effusion . No pneumothorax .