Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Study is slightly limited due to patient rotation . Lungs are hyperinflated with flattening of the diaphragms and emphysematous changes most pronounced in the apices . Heart size remains mildly enlarged with a left ventricular predominance . The aorta remains tortuous and diffusely calcified . No pulmonary vascular congestion is identified . Patchy bibasilar airspace opacities are relatively unchanged compared to the prior study , and likely reflect atelectasis . Blunting of the left costophrenic angle appears unchanged , and is most likely due to chronic pleural thickening . No acute osseous abnormalities are detected .
    OUTPUT:
    
Bibasilar atelectasis . Emphysema .