Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are normally expanded and clear . The cardiomediastinal silhouette , hilar contours and pleural surfaces are normal . There is no pleural effusion or pneumothorax . There is slight indentation of the left side of the trachea .
    OUTPUT:
    
1 . No evidence of acute cardiopulmonary abnormality . 2 . Indentation of the left side of the trachea possibly from thyroid enlargement . Please correlate with physical exam . Updated results were telephoned to Dr . ___ by ___ at 8 : 10 am , ___ , 10 minutes after discovery .