Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A left - sided Port - A - Cath terminates in the superior vena cava , as before . The cardiac , mediastinal and hilar contours appear unchanged . There is no pleural effusion or pneumothorax . The lungs appear clear . Mild hyperinflation is present . The lungs appear clear . Mild degenerative changes are similar along the mid - to - lower thoracic spine .
    OUTPUT:
    
No evidence of acute disease .