Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral chest radiograph demonstrates clear lungs bilaterally . In cardiomediastinal and hilar contours are within normal limits . There is no pleural effusion or pneumothorax . Visualized osseous structures are intact . No free air is identified under the right hemidiaphragm .
    OUTPUT:
    
No acute intrathoracic abnormality .