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 within normal limits , stable relative to prior study performed ___ . There is no pneumothorax or pleural effusion . No air is seen under the right hemidiaphragm .
    OUTPUT:
    
No acute intrathoracic abnormality . Overall stable appearance of the chest relative to study performed ___ .