Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are clear . No confluent consolidation is identified . There is no pneumothorax . No pulmonary vascular congestion or overt edema is identified . There is no pleural effusion . On the frontal view only , there is a mild convexity at the level of the descending thoracic aorta near the diaphragmatic margin , findings suggestive of a small hiatal hernia . The remainder of the cardiomediastinal and hilar contours are within normal limits . The thoracic aorta appears tortuous .
    OUTPUT:
    
No acute cardiopulmonary process . Possible small hiatal hernia .