Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are well expanded and clear . Cardiac size is top normal , but otherwise the cardiomediastinal and hilar contours are unremarkable . There is no pleural effusion or pneumothorax . An old fracture of the lateral aspect of the second right rib is present .
    OUTPUT:
    
No evidence of acute cardiopulmonary process . No widening of the mediastinum appreciated in this radiograph .