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 . As on the previous CT neck and there is substantial prominence of the azygos vein that might potentially represent congenital abnormality such as interrupted inferior vena cava , please correlate with outside imaging if available .
    OUTPUT:
    
No acute cardiopulmonary process . Prominent azygos vein , potentially representing interrupted IVC with azygos vein drainage of the lower body .