Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiomediastinal silhouette is within normal limits . There is no pleural effusion or pneumothorax . There is no CHF or focal lung consolidation . There is no evidence of free air beneath the diaphragm . No pneumomediastinum is identified .
    OUTPUT:
    
Chest x-ray examination within normal limits . No evidence of pneumothorax , pneumomediastinum , or free air beneath the diaphragm . No focal infiltrate or pleural effusion identified .