A lower esophageal ring is an abnormal ring of tissue that forms where the esophagus (the tube from the mouth to the stomach) and stomach meet.
Esophagogastric ring; Schatzki's ring
A lower esophageal ring is a birth defect of the esophagus that occurs in 4% of people. It causes narrowing of the lower esophagus.
Narrowing of the esophagus may also be caused by:
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