Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is interval improvement in pulmonary vascular congestion . Minimal streaky density is consistent with subsegmental atelectasis . The would be difficult to exclude a focal infiltrate in the retrocardiac area . There is no definite effusion . The patient is status post median sternotomy and CABG . Allowing for differences technique , mediastinal structures are stable . An endotracheal tube and nasogastric tube have been withdrawn . A mediastinal drain and bilateral chest tubes remain in place . A right internal jugular catheter is unchanged in position .
    OUTPUT:
    
No definite pleural effusion . There appears to be some interval improvement in vascular congestion .