Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lumbar luminal lobe , accounting for some bronchovascular crowding . No focal opacities concerning for pneumonia . Cardiac size is unchanged compared with the previous exam . The aorta is tortuous as before . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
No evidence of acute cardiopulmonary process .