Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A chest tube again projects over the right hemithorax . There is a similar small quantity of associated subcutaneous emphysema along the right lateral chest wall and base of the neck . There is apparently a trace right apical pneumothorax but not substantial noting an in situ chest tube . The cardiac , mediastinal and hilar contours appear stable . Increased volume loss and retrocardiac opacification are noted in the left lower lobe with a new small possible pleural effusion .
    OUTPUT:
    
Very small suspected right apical pneumothorax .