Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A single portable frontal upright chest radiograph demonstrates interval placement of a central line with the tip in the low SVC . Cardiomediastinal contour is unchanged compared to the prior examination . Lungs are clear . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
Interval placement of a right internal jugular central line with the tip in the low SVC .