Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral chest radiograph demonstrate clear lungs bilaterally . When compared to chest radiograph dated ___ , there has been no significant interval changes . The aorta is torturous . There is no pleural effusion or pneumothorax . No acute osseous abnormality is identified .
    OUTPUT:
    
No acute intrathoracic abnormality .