Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A chest tube again projects along the right lower hemithorax . There is probably a small right apical pneumothorax but not well visualized . Subcutaneous emphysema appears unchanged . The cardiac , mediastinal and hilar contours appear stable . There is no pleural effusion . Several right - sided rib fractures are better demonstrated on a recent prior CT . The right acromioclavicular joint is widened . There has been no definite change .
    OUTPUT:
    
No definite short - term change in the appearance of the chest .