Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low . The heart size is mildly enlarged . Atherosclerotic calcifications are noted at the aortic knob . A 3 .5 x 5 .7 cm right paratracheal well - circumscribed mass is identified , as well as a 5 .5 x 3 .1 cm left paramediastinal lesion . The trachea appears slightly narrowed as a result of these masses . Hilar contours are unremarkable , and no pulmonary vascular congestion is seen . Patchy bibasilar airspace opacities may reflect atelectasis or infection . No pleural effusion or pneumothorax is present . No acute osseous abnormalities demonstrated . S - shaped scoliosis of the thoracolumbar spine is present .
    OUTPUT:
    
Bilateral paramediastinal masses , likely reflecting an enlarged thyroid goiter , with mild tracheal narrowing , but further assessment with chest CT with IV contrast is recommended . Patchy opacities in the lung bases likely reflect atelectasis but infection or aspiration are not excluded .