FINDINGS:
Heart size is normal and unchanged.  The mediastinal and hilar contours are
 unchanged, allowing for differences in patient positioning. The pulmonary
 vasculature is normal.  Bandlike lower lung opacities most compatible with
 atelectasis.  The upper lungs are clear.  No pneumothorax is seen. There are
 no acute osseous abnormalities.

IMPRESSION:
No significant interval change.  Persistent lower lung atelectasis.