IMPRESSION:
Compared to chest radiographs  through .
 
 Very small volume of air persists at the apex of the left hemi thorax due to
 previous hydro pneumothorax.  There is no appreciable layering pleural
 effusion.  Left hemidiaphragm is moderately elevated.  Large volume of stomach
 traversing a hiatus hernia, probably unchanged.  Cardiac silhouette normal
 size.  Upper lungs clear.