Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Right internal jugular central venous catheter tip terminates in the upper SVC . No pneumothorax is present . Aortic stent graft is seen extending from the aortic arch to the descending thoracic aorta , with the mediastinal and hilar contours remaining unchanged . Heart size is stable , and borderline enlarged . Pulmonary vascularity is normal . No focal consolidation , pleural effusion or pneumothorax is seen . Emphysematous changes are most severe within the lung apices .
    OUTPUT:
    
Right internal jugular central venous catheter tip terminates in the upper SVC . No pneumothorax .