Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single portable chest radiograph is provided . The patient is status post esophageal pull - through procedure , which results in the opacity adjacent to the right mediastinal border . No evidence of pneumomediastinum . The lungs are clear without focal consolidation , pleural effusion or pneumothorax . The heart size is normal .
    OUTPUT:
    
No evidence of pneumomediastinum status post esophageal dilation .