Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP and lateral chest radiograph demonstrates clear lungs bilaterally . There is no pleural effusion or pneumothorax . Cardiomediastinal contours are within normal limits . No air under the right hemidiaphragm is identified . Osseous structures are unremarkable .
    OUTPUT:
    
No acute intrathoracic abnormality .