Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are clear without confluent consolidation . There is no pulmonary edema or pleural effusion . Cardiomediastinal and hilar contours are within normal limits . No pneumothorax or pneumomediastinum is evident . There has been no significant change since prior radiograph from ___ .
    OUTPUT:
    
No acute cardiopulmonary process . No radiographic evidence of pneumonia .