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 . There is no evidence of pneumothorax , pulmonary edema , or pleural effusion . No air into the right hemidiaphragm is seen .
    OUTPUT:
    
No acute intrathoracic abnormality .