Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiomediastinal silhouettes are within normal limits , with a mildly tortuous thoracic aorta . The hila are unremarkable . The lungs are clear without focal consolidation . The lungs are hyperexpanded . There is no pulmonary vascular congestion or pulmonary edema . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
No acute cardiopulmonary process .