Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared with most recent prior radiograph , there has been interval placement of an ET tube which is in good position . A new right internal jugular introducer sheath is in expected position . The patient has undergone median sternotomy with wires and surgical clips noted overlying the mediastinum and upper abdomen . A right chest tube and a mediastinal drain are new with the previously seen right chest tube now in more horizontal position . Air inclusions project over the region of the left costophrenic sinus . There has been interval improvement in left lower lung opacity and atelectasis of the right medial lung base . The heart size has decreased compared to prior . No pleural effusion or pneumothorax is present .
    OUTPUT:
    
1 . Interval placement of ET tube , right IJ introducer sheath , right chest tube and mediastinal drain after median sternotomy . 2 . Interval decrease in size cardiomediastinal silhouette with no evidence of pneumothorax .