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 . There is no pneumothorax . Mediastinal and hilar contours are within normal limits . The thoracic aorta has a tortuous course , unchanged from prior . The cardiac size is within normal limits .
    OUTPUT:
    
No acute cardiopulmonary process