Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP upright and lateral radiographs of the chest demonstrate clear lungs . No focal consolidation concerning for pneumonia . The heart is mildly enlarged , similar to prior . There is no pleural effusion or pneumothorax . A calcified and tortuous aorta is again seen . Left - sided Port - A - Cath terminates in the right atrium . Hilar contours are stable and unremarkable . Retrocardiac density noted containing an air - fluid level is compatible with a large hiatal hernia .
    OUTPUT:
    
1 . No pneumonia . 2 . Large hiatal hernia .