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