Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A catheter again ends in the superior vena cava . The aortic arch is partly calcified . Mild unfolding of the thoracic aorta is similar . The heart is normal in size . Streaky left basilar opacity suggests minor atelectasis or scarring . There is no pleural effusion or pneumothorax . Mild - to - moderate degenerative changes are similar along the thoracic spine .
    OUTPUT:
    
No evidence of acute disease .