Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral chest radiographs again demonstrate right - sided subclavian central line catheter terminating in the right atrium . Defibrillator patches again also seen unchanged . The lungs are now clear and there is no pleural effusion or pneumothorax . The cardiac , hilar , and mediastinal contours are within normal limits . The left hemidiaphragm is elevated , but this is not significantly changed from prior imaging . No free air below the diaphragm .
    OUTPUT:
    
No acute cardiopulmonary process .