Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP upright and lateral chest radiograph demonstrates low lung volumes . No focal consolidation convincing for pneumonia is identified . A dilated and tortuous descending aorta as demonstrated on a CTA dated ___ is noted . There is no large pleural effusion or pneumothorax . Visualized osseous structures demonstrates no acute abnormality .
    OUTPUT:
    
No acute intrathoracic abnormality .