Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared to chest radiographs from ___ , there has been interval removal of a right - sided chest tube and small right apical pneumothorax has resolved . Mild effusion on the right with a loculated appearance has mildly improved and could represent postoperative hematoma or loculated effusion . Tiny effusion on the left persists . Mild bibasilar atelectasis has improved . Cardiomediastinal silhouette is stable . Right innominate artery stent is again noted .
    OUTPUT:
    
1 . Interval removal of right - sided chest tube with resolved small right apical pneumothorax . 2 . Mild decrease in fluid within the right pleural space with loculated appearance , which could represent postoperative hematoma or loculated effusion . 3 . Persistent small left pleural effusion . 4 . Improved mild bibasilar atelectasis .