Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single frontal image of the chest was obtained . This demonstrates clear lungs bilaterally with no focal opacity identified . The cardiomediastinal and hilar contours are within normal limits . There is no pleural effusion or pneumothorax . No free air is identified within the abdomen .
    OUTPUT:
    
No acute intrathoracic abnormality . No free air is identified under bilateral diaphragms .