Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared with ___ , the overall appearance is similar , with continued opacity at the right lung base , likely combination of collapse and / or consolidation and a small pleural effusion . This may be very slightly improved compared to the prior film . Suspect background hyperinflation / COPD . There is borderline upper zone redistribution but no overt CHF . No left - sided effusion . No new focal infiltrate is identified . The cardiomediastinal silhouette , including cardiomegaly , is unchanged allowing for technical differences . Sternotomy wires and left - sided pacemaker with lead tips over the right atrium and right ventricle again noted .
    OUTPUT:
    
Continued right base opacity , slightly improved compared with ___ . This likely represents a combination of collapse and consolidation and a small pleural effusion . No new infiltrate detected and no left - sided effusion . Borderline upper zone redistribution . No overt CHF .