Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A PICC line terminates in the upper superior vena cava , inserted from left - sided approach . There is mild - to - moderate unfolding of the thoracic aorta . The heart is normal in size . The lungs appear clear . There are no pleural effusions or pneumothorax . Pulmonary opacities described in the CT report are occult on radiography .
    OUTPUT:
    
No evidence of acute disease .