Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size is top normal . Cardiomediastinal and hilar contours are stable . Tortuosity of the aorta is noted with mild dilatation of the ascending aorta , as seen on prior CT , not clearly changed . There is no pleural effusion or pneumothorax . The lungs remain clear without focal consolidation concerning for pneumonia . There is no pulmonary edema . There is no free air below the diaphragm .
    OUTPUT:
    
No acute cardiopulmonary process .