Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: An enteric tube is noted with tip in the distal esophagus , and should be advanced by approximately 15 cm for appropriate positioning within the stomach . Heart size is mildly enlarged . The aorta is tortuous and diffusely calcified . Mediastinal and hilar contours are within normal limits . Lungs are hyperinflated with findings suggestive of emphysema . Streaky left basilar opacity may reflect atelectasis . No pleural effusion or pneumothorax is seen . There are mild degenerative changes within the thoracic spine with S - shaped scoliosis .
    OUTPUT:
    
Enteric tube tip in the distal esophagus , and should be advanced by approximately 15 cm for appropriate position within the stomach . Streaky left basilar opacity may reflect atelectasis .