Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA upright and lateral chest radiograph demonstrates clear lungs bilaterally . Cardiomediastinal and hilar contours are within normal limits and stable . There is no evidence of pulmonary edema . There is no pneumothorax or pleural effusion . There is no air under the right hemidiaphragm .
    OUTPUT:
    
No acute intrathoracic abnormality .