Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared with prior radiographs on ___ , previously seen left apical pneumothorax if at all is insignificant . There is no evidence of tension . No right pneumothorax . There is slight improvement in bibasilar atelectasis . There is no focal consolidation . Postoperative appearance of the cardiomediastinal silhouette is unchanged . A right IJ catheter is in the low SVC . Median sternotomy wires and mediastinal clips are stable in appearance .
    OUTPUT:
    
Previously seen Left apical pneumothorax , if anything is insignificant .