Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: An endotracheal tube terminates appropriately above the carina . An enteric tube courses into the stomach . The lungs are clear , aside from scarring of the left lung base . The cardiomediastinal and hilar contours are within normal limits , noting atherosclerotic calcification of the aortic arch . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
1 . Endotracheal tube and enteric tube in standard position . 2 . Clear lungs . This preliminary report was reviewed with Dr . ___ , ___ radiologist .