Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are clear . There is no confluent opacity . No pneumothorax or pneumomediastinum is evident . There is no vascular congestion , edema , or pleural effusions . Cardiomediastinal contours are within normal limits . There is no subdiaphragmatic free air .
    OUTPUT:
    
No acute cardiopulmonary process .