Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiomediastinal contour remains shifted to the left , as before . The aorta is tortuous . Lung volumes are somewhat low . Subtle pulmonary opacities at the base of the right lung suggests atelectasis . The appearance of the left hemi thorax with opacity at the left base is stable accounting for differences in inspiration the between the current study in the most recent prior No pneumothorax .
    OUTPUT:
    
No significant change from the prior examination .