Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is a decreased though persistent right - sided hydropneumothorax with interval incomplete reexpansion of the right lung . No significant mediastinal shift identified with unremarkable mediastinal , hilar , and cardiac contours . Right lower lung opacifications may reflect combination of reexpansion edema and atelectasis . Minimal left lung atelectasis noted .
    OUTPUT:
    
Improving right hydropneumothorax with right lower lung opacifications , atelectasis versus edema are likely .