Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiomediastinal and hilar contours are within normal limits . There is mild calcification of the aortic knob . The lungs are well expanded and clear . There is no focal consolidation , pleural effusion or pneumothorax . The trachea is somewaht deviated to the left likely due to an enlarged thyroid gland .
    OUTPUT:
    
No acute cardiopulmonary process .