Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral chest radiograph demonstrate clear lungs bilaterally . Cardiomediastinal and hilar contours are stable relative to prior examination dated ___ . There is no pneumothorax or appreciable pleural effusion . Clips project over the right upper quadrant . There is no air under the right hemidiaphragm .
    OUTPUT:
    
No acute intrathoracic abnormality .