Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared with the prior study , a right - sided chest tube has since been placed at the right lung base . The previously seen right pleural effusion is markedly smaller , nearly completely resolved . There is minimal residual collapse and / or consolidation at the right lung base . Hyperlucency at the right lung base likely represents a small basilar pneumothorax . Again seen is pleural fluid and / or thickening extending from the right lung apex along the right lateral chest wall , unchanged . There is minimal atelectasis at the left lung base with blunting of left costophrenic angle unchanged . No overt CHF . Elsewhere , the lungs are grossly clear . Cardiomediastinal silhouette is enlarged , but unchanged .
    OUTPUT:
    
1 . Interval placement of right chest tube , with near complete resolution of the right base pleural effusion . 2 . Probable small pneumothorax at the right lung base . No right apical pneumothorax is identified . 3 . Interval improvement in collapse and / or consolidation at the right lung base , with some residual opacity present . 4 . Otherwise , doubt significant interval change .