Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: In comparison to chest radiographs obtained ___ year prior , no significant changes are appreciated . Left mid lung nodule projecting over the posterior sixth rib is unchanged . The lungs are otherwise fully expanded and clear . Cardiomediastinal and hilar silhouettes and pleural surfaces are normal .
    OUTPUT:
    
No significant cardiopulmonary abnormalities to suggest amiodarone pulmonary toxicity .