Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared with ___ , there has been slight clearing of the consolidation and effusion at the left base . Otherwise , no definite change . Again seen is background hyperinflation / COPD . A Port - A - Cath is in place , tip overlying right atrium . Cardiomediastinal silhouette is unchanged . There is upper zone redistribution , but doubt overt CHF . There is increased opacity at both bases , consistent with left lower lobe collapse and / or consolidation , and on the right , small effusion and underlying atelectasis . No definite consolidation at the right base .
    OUTPUT:
    
Left lower lobe collapse and / or consolidation , slightly improved compared with ___ . Left pleural effusion is also improved . Small right effusion , with underlying collapse and / or consolidation , is similar to the prior study . No new infiltrate or consolidation identified .