Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Right pigtail pleural catheter remains in place , with a marked decrease in size of right pleural effusion compared to the prior study , with a residual small effusion remaining . Additionally , a small pneumothorax is present at the right lung apex . Cardiomediastinal contours are within normal limits , and previously present pulmonary edema has resolved . Left retrocardiac opacity has partially improved and is likely due to atelectasis . Previously moderate left pleural effusion has decreased in size with residual small pleural effusion remaining .
    OUTPUT:
    
1 . Decreased right pleural effusion with residual small effusion and small right apical pneumothorax . 2 . Improving left lower lobe atelectasis and slight decrease in small left pleural effusion .