Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lung volumes are low . There are linear opacities in the left lower lobe , likely secondary to atelectasis . The lungs are otherwise clear . The heart size is normal . There is rightward deviation of the upper trachea raising concern for thyromegaly . There is no pneumothorax or pleural effusion .
    OUTPUT:
    
1 . Low lung volumes and left lower lobe atelectasis . No evidence of pneumonia . 2 . Rightward deviation of the upper thoracic trachea is suggestive of thyromegaly .