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Fig. 2E —Lumina of air columns going down thorax in 56-year-old woman,
same patient as in Figure 1.
This set of CT scans shows landmarks for distance down esophagus. Image at 97%
of esophageal course through thorax. Lower esophageal sphincter is almost
always closed. Lower esophageal sphincter is usually in last two sections of
chest and first section of abdomen.
