Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: An apparent new epidural catheter is present . Cardiomediastinal silhouette is probably unchanged allowing for differences in positioning . No CHF . The opacity previously seen at the right base has essentially resolved . There is new platelike atelectasis in the right infrahilar region . No right effusion . Again seen is opacity at the left base , with retrocardiac opacity . Small left effusion is new . A left pigtail catheter remains in place . No pneumothorax is detected on either side . On the right , there is a catheter or other tubing overlying the right upper quadrant of the abdomen versus right lung base . Trace subcutaneous air is now seen between the right hemidiaphragm , new compared with the prior film .
    OUTPUT:
    
No pneumothorax is detected . There is trace subdiaphragmatic air on the right , near the new right tunneled pleural catheter . By report , the patient had abdominal surgery 1 day previous and this would be compatible with a small amount of expected intraperitoneal air following abdominal surgery . At this time , I do not see an op note on OMR for surgery of 1 day previous . Small left pleural effusion is new or increased compared with ___ . Patchy opacity at the left base is slightly different in configuration but overall similar .