Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral images of the chest . There is a slight opacity in the right lung base with a small amount of volume loss , consistent with atelectasis . The lungs are otherwise clear . There is no pleural effusion or pneumothorax . The cardiomediastinal silhouette is borderline enlarged . A hiatal hernia is seen .
    OUTPUT:
    
No acute cardiopulmonary process .