Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is again a chest tube at the base of the right hemi thorax , unchanged in configuration . There is a trace remaining pneumothorax . The maximum distance between the outer pleural edge and inner chest wall measures 6 mm mm , similar to before . The patient is status post sternotomy . The cardiac , mediastinal and hilar contours appear stable . Streaky opacities at the left base indicate minor atelectasis .
    OUTPUT:
    
Trace pneumothorax on the right without significant change .