Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are clear without focal consolidation . No pleural effusion or pneumothorax is seen . The cardiac and mediastinal silhouettes are unremarkable . Evidence of a large hiatal hernia is seen , but not well assessed on this study . Residual enteric dense contrast is seen in the partially imaged colon .
    OUTPUT:
    
No acute cardiopulmonary process . Hiatal hernia .