Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral radiographs of the chest were acquired . There is minimal subsegmental bibasilar atelectasis . The lungs are otherwise clear . The heart is mildly enlarged . The mediastinal contours are normal . The trachea is normal in course and caliber . There is a left - sided aortic arch . There are no pleural effusions . No pneumothorax is seen . S - shaped scoliosis of the thoracolumbar spine is noted . There are also multilevel degenerative changes of the thoracolumbar spine including mild wedging of mid thoracic vertebral bodies , likely chronic in nature .
    OUTPUT:
    
1 . Mild cardiomegaly . 2 . Minimal bibasilar atelectasis . No definite focal consolidation .