Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A single portable AP chest radiograph was obtained . A tracheostomy tube is in expected position . A radiopaque line at the right apex may represent an azygos fissure or scarring . The lungs are well inflated and clear . There is no pneumothorax or pneumomediastinum . Cardiac and mediastinal contours are normal .
    OUTPUT:
    
No pneumothorax or pneumomediastinum status post esophageal dilation . Discussed with Dr ___ ___ phone at ___ ___ .