Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral radiographs of the chest demonstrate clear lungs and normal hilar and cardiomediastinal contours . There is no pneumothorax or pleural effusion . Pulmonary vascularity is normal . No displaced rib fracture is seen .
    OUTPUT:
    
1 . No acute cardiopulmonary process . 2 . No displaced rib fracture is seen . However , the PA and lateral radiograph is insensitive for the detection of subtle non-displaced rib fractures . If there is continued clinical concern , dedicated rib radiographs with a skin marker at the location of the patient 's pain is recommended .