Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared to the prior film , patchy opacity right base is more pronounced and there is a new small right pleural effusion . Atelectasis at the left base is also a more pronounced . No left pleural effusion . The cardiomediastinal silhouette is grossly unchanged . Upper zone redistribution is again seen , unchanged , without other evidence of CHF . Chain sutures noted . In the right upper and mid zones . Again seen is a small amount of air beneath the right hemidiaphragm , consistent with recent surgery . Clips noted in the left costophrenic region . Also again seen subcutaneous emphysema overlying the lower left chest wall .
    OUTPUT:
    
New patchy opacity and small effusion at the right base . The possibility of an early pneumonic infiltrate in this area can not be excluded . Increased atelectasis at the left base , though the degree of retrocardiac opacity is slightly improved . Please see report of chest CTA obtained 2 later the same day .