Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral chest radiographs demonstrate clear lungs bilaterally . There is no focal opacity concerning for pneumonia . The cardiomediastinal and hilar contours are within normal limits . There is no pleural effusion or pneumothorax . Visualized osseous structures are without acute abnormalities .
    OUTPUT:
    
No acute intrathoracic abnormality .