Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are clear . No confluent opacity is identified . There is no pneumothorax . No pulmonary edema or pleural effusions are evident . Cardiomediastinal and hilar contours are within normal limits . No mediastinal widening is evident . High - density contrast material is partially visualized within the descending colon .
    OUTPUT:
    
No acute cardiopulmonary process