Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A left internal jugular sheath is present . There is no focal consolidation , pleural effusion or pneumothorax . The heart is mildly enlarged , consistent with a post-operative appearance . Median sternotomy wires and clips are noted . There is no pleural effusion or focal consolidation . Note is made of a distended stomach .
    OUTPUT:
    
No evidence of pneumothorax .