DAVID M. MARTIN, MD / SCIENCE PHOTO LIBRARY DAVID M. MARTIN, MD / SCIENCE PHOTO LIBRARY
Schatzki's rings. Endoscope view of Schatzki's ring, also known as a "B ring", at the junction between the oesophagus and stomach. Schatzki's ring causes a narrowing of the cavity (lumen) of the oesophagus. It is a congenital defect, which may cause food to build up around it. This food requires removal to stop any chance of an infection occurring.
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