Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are hyperinflated . No focal opacities are identified . Mild cardiomegaly is unchanged from prior with significant left atrial contribution . An unfolded aorta with prominent atherosclerotic calcifications at the aortic knob is also unchanged . There is no pleural effusion or pneumothorax . Hilar contours are stable .
    OUTPUT:
    
No evidence of acute cardiopulmonary process . Stable mild cardiomegaly .