Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared to chest radiographs from ___ , there is increased right pleural effusion with new right middle lobe collapse . Widening of the mediastinum has decreased and reflects expected postsurgical changes . Right apical pneumothorax , as well as left lower lobe atelectasis , have resolved . Cardiac size is difficult to assess in the presence of effusion , though likely mildly enlarged , stable .
    OUTPUT:
    
1 . Increased right pleural effusion with new right middle lobe collapse . 2 . Improved widening of the mediastinum , reflecting expected postsurgical changes . 3 . Resolved right apical pneumothorax and left lower lobe atelectasis . 4 . Stable mild cardiomegaly .