Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size is normal . A moderate size hiatal hernia is unchanged . Mediastinal and hilar contours are stable without evidence of pneumomediastinum . An electronic device compatible with a pH probe is noted in the region of the mid esophagus . The pulmonary vascularity is not engorged . The lungs are clear . No focal consolidation , pleural effusion or pneumothorax is present . No acute osseous abnormalities seen .
    OUTPUT:
    
No acute cardiopulmonary abnormality . Moderate - sized hiatal hernia .