Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The chest tube at the right lung base is again seen . No definitive pneumothorax is identified . Compared with ___ , findings are similar , with possible very subtle increased opacity seen in the right lung midzone compared to the prior film . Minimal blunting of the right costophrenic angle is unchanged , consistent with a small effusion . Relative small size of the right hemithorax is unchanged . Extensive rib fractures in the right upper chest and separation of the right AC joint again noted . On the left , band - like atelectasis , with tenting of the left hemidiaphragm and minimal blunting of the left costophrenic angle , is similar . The degree of vascular plethora is also similar .
    OUTPUT:
    
1 ) No definite change . No gross pneumothorax . 2 ) Possible faint increased opacity in the right mid zone -- ? area of hemorrhage or pleural fluid . Attention to this area on followup films is recommended , as any perceived difference between the two films is subtle .