Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are well expanded . No focal opacities are identified . A prominent right hilum is unchanged from prior exam . Moderate cardiomegaly appears unchanged from prior . A tortuous aorta is present . Atherosclerotic calcifications of the aortic knob are re-identified . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
No evidence of acute cardiopulmonary process . Unchanged cardiomegaly and right hilar prominence .