Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral chest radiograph demonstrates clear lungs bilaterally . Cardiomediastinal and hilar contours are within normal limits . There is no pneumothorax , evidence of pulmonary edema , or pleural effusion . No displaced rib fracture is identified .
    OUTPUT:
    
No evidence of acute intrathoracic abnormality . No displaced rib fracture . If clinical concern persists , dedicated rib films with radiopaque marker at the site of clinical concern may be considered .