Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lung volumes are low which causes crowding of the bronchovascular structures . Bilateral , right greater than left , lower lobe opacities most likely represent atelectasis . No pleural effusion or pneumothorax . A vascular stent projects over the trachea at the level of the clavicles . The trachea is deviated to the right . Enlargement of the mediastinal and cardiac contours may be due to technique .
    OUTPUT:
    
Low lung volumes . Bilateral lower lobe opacities , right greater than left , most likely represent atelectasis . Deviation of the trachea to the right may indicate an enlarged thyroid .