Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Stable cardiomegaly and tortuosity of the thoracic aorta . Right - sided chest tube remains in place , with probable decrease in size of small - to - moderate right pleural effusion , although positional differences limit comparison between the exams . Horizontal interface in lower right hemithorax on the frontal view appears to correspond to a loculated anterior hydropneumothorax on the lateral radiograph , and note is made of previous loculated hydropneumothorax in this region on CT of ___ . On the left , there is apparent elevation of the left hemidiaphragm with increased distance between the apparent diaphragm level and adjacent bowel in the abdomen , suggesting a moderate subpulmonic pleural effusion on the left . Bibasilar retrocardiac atelectasis has slightly improved , and heterogeneous opacities in the right mid and right lower lung are also slightly better .
    OUTPUT:
    
1 . Apparent slight decrease in size of right pleural effusion with loculated anterior hydropneumothorax . 2 . Moderate subpulmonic left pleural effusion . 3 . Improving bibasilar retrocardiac atelectasis and heterogeneous right lung opacities .