Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single AP view of the chest provided . Interval increase in opacification of the right hemithorax with unchanged rightward shift of midline structures . The left lung is clear . Hilar and cardiomediastinal contours are obscured .
    OUTPUT:
    
Worsening collapse of the right lung from ___ with unchanged rightward shift of mediastinal structures .