Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral chest radiographs demonstrates clear lungs bilaterally . Mediastinal contour appears stable an correlates with pulmonary arterial enlargement as demonstrated on CTA dated ___ . There is no pleural effusion or pneumothorax . Evaluation of the osseous structures demonstrates no acute abnormality .
    OUTPUT:
    
No acute intra thoracic abnormality . If concern for left rib fracture persists , dedicated left rib films with a marker indicating site of pain is recommended .