Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is normal . The aorta is mildly tortuous with minimal atherosclerotic calcifications noted at the aortic knob . Mediastinal and hilar contours are unchanged , with a large hiatal hernia again noted containing an air - fluid level . There is minimal atelectasis at the lung bases . No focal consolidation , pleural effusion or pneumothorax is present . Mild degenerative changes noted in the mid thoracic spine .
    OUTPUT:
    
No acute cardiopulmonary abnormality . Large hiatal hernia .