Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Chest , PA and lateral . The lungs are clear aside from bibasilar atelectasis . There is mass effect on the trachea from an enlarged thyroid gland . The hilar and cardiomediastinal contours are normal . There is no pneumothorax or pleural effusion . Pulmonary vascularity is normal .
    OUTPUT:
    
1 . No acute cardiopulmonary process . 2 . Mass effect on trachea secondary to thyromegaly . Correlate with exam .