Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are well - expanded . Mild interstitial markings are unchanged compared to ___ and likely reflect a component of chronic interstitial lung disease . The lungs are otherwise clear . No pleural effusion or pneumothorax . Heart size is again top normal . Cardiomediastinal and hilar silhouettes are unremarkable , again noting marked tortuosity of the ascending and descending thoracic aorta . Mild rightward deviation of the trachea is likely related to aortic tortuosity . Incidental note is made of severe osseous demineralization .
    OUTPUT:
    
No acute cardiopulmonary abnormality .