Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single portable chest radiograph was provided . The lungs are well expanded . There is no focal consolidation , pleural effusion or pneumothorax . There is bibasilar atelectasis . The cardiomediastinal silhouette is enlarged , likely due to tortuous aorta . The bones are intact .
    OUTPUT:
    
No acute cardiopulmonary process . Tortuous aorta with unchanged appearance of the cardiomediastinal silhouette .