Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Patient is status post AVR . There is prior evidence of median sternotomy and the sternal sutures are intact . Since prior radiograph from yesterday , the left chest tube has been removed . There is very minimal pneumothorax distributed at left costophrenic angle . Mild pneumomediastinum is unchanged since yesterday . Small right pleural effusion and right basal atelectasis have improved , whereas left lower lung atelectasis reflected by increased retrocardiac density has worsened . Pulmonary vascular congestion is much better than what it was on yesterday 's radiograph . Swan - Ganz catheter through the right internal jugular approach is seen ; however , the tip is now more proximally migrated and appears either in the ventricular outflow tract or in the right ventricle . Consider repositioning .
    OUTPUT:
    
1 . Very minimal left pneumothorax distributed near the left costophrenic angle and mild - to - moderate pneumomediastinum which is unchanged since yesterday . 2 . Small right pleural effusion and right basal atelectasis and worsened left lower lung atelectasis over last 24 hours .