Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral chest radiograph demonstrate clear lungs with no focal opacity . Cardiomediastinal and hilar contours are within normal limits . There is no evidence of pulmonary edema . There is no pleural effusion or pneumothorax . Imaged osseous structures demonstrate no acute abnormality . Imaged upper abdomen is unremarkable .
    OUTPUT:
    
No acute intrathoracic abnormality .