Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Small to moderate left pneumothorax is stable . Mild right shifting of the mediastinum is stable Cardiac size is normal . Aside from minimal atelectasis in the left apex , the lungs are clear . There is no pleural effusion .
    OUTPUT:
    
Stable small to moderate left pneumothorax and shifting of the cardiomediastinum to the right