Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There has been interval insertion of of right - sided pigtail drainage catheter and substantial decrease in right pleural effusion with only small residual effusion remaining . A right lower lung inferior lateral lucency suggests a basilar pneumothorax . There is adjacent pleural thickening and right lower lobe opacification may be due to atelectasis or consolidation . Focal right middle lobe opacification is unchanged . The mediastinal contours and heart size are stable .
    OUTPUT:
    
1 . Right basilar pneumothorax and pleural thickening suggests the possibility of a trapped lung . 2 . Substantially decreased right pleural effusion post right pigtail catheter insertion . 3 . Right lower lobe opacification may be due to atelectasis or consolidation .