Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A small right pneumothorax with apical , lateral , posterior , and central components is slightly smaller than on previous examination . An air - fluid level in the right lower lung is new since previous examination . Moderate right and small left pleural effusions are unchanged . Mediastinal contours cardiac borders are stable .
    OUTPUT:
    
Small to moderate right hydropneumothorax .