Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are clear . The heart is normal in size . The mediastinal contours are normal . There are no pleural effusions . No pneumothorax is seen . No definite rib fractures are identified .
    OUTPUT:
    
1 . No acute cardiac or pulmonary findings . 2 . No definite rib fracture identified . If there is continued clinical concern for a rib fracture , further evaluation could be performed with a dedicated rib series , including an appropriately positioned radiopaque skin marker .