Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A vascular stent in the SVC is in unchanged position . A double - lumen catheter extends past the stent and into the right atrium , further than it has previously been located . The lungs are clear . Cardiac silhouette is normal in size . There is no pleural effusion or pulmonary edema . There is no pneumothorax .
    OUTPUT:
    
1 . No evidence of pneumonia . 2 . Vascular stent within the SVC with double lumen venous catheter terminating within the right atrium , further than on the prior study .