Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Resolution of the hydropneumothorax in the right apex which is now replaced with pleural effusion . A small right basilar pleural effusion is also noted . There has been interval expansion of the right lung with decrease in observed right lower zone atelectasis . There has been a stable shift in the mediastinum and heart to the right . Left lung is emphysematous but otherwise unremarkable . There are post-surgical changes seen in the right lateral ribs with interval increase in rib retraction likely secondary to volume loss .
    OUTPUT:
    
Improved aeration and expansion of right lung . Right apical and small basilar pleural effusions . No evidence of infection or malignancy .