Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A right - sided PICC terminates in the mid SVC , a right internal jugular catheter has been removed . Median sternotomy noted . There is persistent free air under the diaphragm , similar in volume when compared to the prior study . No pneumothorax seen . No consolidation or pleural effusion seen . The heart remains enlarged . No frank pulmonary edema . Mild pulmonary vascular congestion .
    OUTPUT:
    
Persistent pneumoperitoneum . Otherwise , no significant interval change .