Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Allowing for differences in positioning , lines and tubes are similar in appearance . Again noted is the pigtail - type catheter at the right lung base . A prominent gastric air bubble is also again noted . No pneumothorax is detected . Although the cardiomediastinal silhouette appears slightly more pronounced , this may be relate to differences in positioning . There is upper zone redistribution , similar to the prior study . Again seen is left lower lobe collapse and / or consolidation , with suspected small left effusion . Small left effusion would be difficult to exclude . Patchy opacity at the right base is again noted . Possible minimal blunting of the right costophrenic angle , but no obvious right pleural effusion .
    OUTPUT:
    
Overall appearance is probably similar . No gross right effusion . No pneumothorax detected .