Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are well inflated and clear . The cardiomediastinal silhouette , hilar contours , and pleural surfaces are normal . There is no pleural effusion or pneumothorax . No definite rib fracture is identified , but dedicated rib radiographs would be more sensitive and may be considered if there remains strong clinical suspicion for rib fracture .
    OUTPUT:
    
No evidence of acute cardiopulmonary process .