Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is a single - chamber ICD with the tip of the lead extending to the right ventricle . The cardiac , mediastinal , and hilar contours are normal . There is no pleural effusion or pneumothorax . The lungs are clear . Specifically , there are no signs of lung fibrosis .
    OUTPUT:
    
No lung fibrosis .