Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low , but the lungs are clear . There is no pneumothorax . The mildly prominent appearance of the cardiac silhouette may be due to a combination of suboptimal inspiratory effort and prominent epicardial fat . There is a moderate - sized hiatal hernia . The regional bones and soft tissues are unremarkable .
    OUTPUT:
    
No evidence of pneumonia . Moderate hiatal hernia .