Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is mildly enlarged . The aorta is tortuous and demonstrates diffuse calcifications . The contour of the aorta is unchanged , and the previous CT has demonstrated aneurysmal dilatation of the descending thoracic aorta . The pulmonary vascularity is normal . Hilar contours are unremarkable . Lungs are clear without focal consolidation . No pleural effusion or pneumothorax is seen . Multiple right remote rib fractures are re- demonstrated . Known blastic metastases within the bony thorax are better delineated on the recent CT , though an expansile lesion of a left lower rib is unchanged .
    OUTPUT:
    
No acute cardiopulmonary abnormality .