Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Tip of the left - sided PICC line is at the level of the upper superior vena cava . The lungs are clear . Contour of the ascending thoracic aorta is moderately prominent and some calcified atherosclerotic plaque is seen in the aortic arch . No suspicious focal bony lesion is seen .
    OUTPUT:
    
Left - sided PICC line tip at level upper superior vena cava .