Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is a mildly tortuous thoracic aorta , with aortic arch calcifications noted . Otherwise , the cardiomediastinal silhouettes are within normal limits . Heart size is top - normal . The bilateral hila are unremarkable . The lungs are clear . There is no evidence of pulmonary vascular congestion . There is no pneumothorax or pleural effusion . No displaced rib fractures are seen .
    OUTPUT:
    
No acute cardiopulmonary process . No evidence of a displaced rib fracture . If rib fractures are strongly suspected , dedicated rib radiographs could be obtained to further evaluate for subtle rib fractures .