Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Since prior , there has been interval placement of right - sided central venous catheter with tip projecting over the right atrium and could be retracted approximately 3 cm for placement in the lower SVC . There is no pneumothorax . The lungs remain clear and given differences in technique , the cardiomediastinal silhouette is unchanged .
    OUTPUT:
    
Right - sided central venous catheter with tip in the right atrium and could be retracted 3 cm for placement in the lower SVC .