Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: On the right , there has been interval placement of a chest tube projecting over the right hemithorax . There is a new small quantity of subcutaneous emphysema associated with tube placement and a small pneumothorax . Vague opacity in the left upper the right upper lung is more suggestive of atelectasis than a substantial effusion . The right - sided effusion is probably still fairly small at most and may have been evacuated . The left lung remains clear . The patient is status post coronary artery bypass graft surgery . The cardiac , mediastinal and hilar contours appear stable .
    OUTPUT:
    
Status post right - sided chest tube placement . Small pneumothorax and subcutaneous emphysema , although not necessarily unanticipated following recent instrumentation . Short - term follow - up radiography is suggested . No definite pleural effusion identified but technique may be limited for assessing small effusions .