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 pleural effusion , pneumothorax , or evidence of pulmonary edema . Imaged osseous structures are without evidence of an acute fracture . Metallic density is noted within the subcutaneous tissues of the left lateral chest wall . No air is seen under the right hemidiaphragm .
    OUTPUT:
    
No acute intra thoracic abnormality . If clinical concern for rib fracture persists , dedicated rib pelvis with radiopaque marker can be performed . No displaced rib fracture is identified .