Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: NG tube terminates in the region of the stomach . Midline sternotomy wires again noted . SVC stent appears unchanged . Lungs are well expanded and clear . Postoperative mediastinum , hila , cardiac silhouette are normal . No pleural effusion or pneumothorax .
    OUTPUT:
    
NG tube in appropriate position . No acute intrathoracic process .