Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral chest radiograph demonstrate clear lungs bilaterally . No focal consolidation concerning for pneumonia is seen . The cardiomediastinal and hilar contours are unremarkable . An air - fluid level is identified posterior to the heart within the posterior mediastinal space is most compatible with a hiatal hernia . Subtle blunting of right costophrenic angle is identified which may reflect a small pleural effusion . No acute osseous abnormality identified . There is no pneumothorax .
    OUTPUT:
    
No focal consolidation concerning for pneumonia . Stable moderate gastic hiatus hernia .