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You have had an operation on the passage between your oesophagus and your stomach. The operation involved wrapping part of your stomach around your oesophagus.

The oesophagus is usually closed by a sphincter muscle at the junction to the stomach. This is meant to prevent the stomach contents and gastric acid being regurgitated into the oesophagus. Only during swallowing does the oesophagus briefly open its sphincter muscle to the stomach.

To support the oesophageal sphincter, part of the stomach can be wrapped around the lower part of the oesophagus. This involves wrapping this piece around the oesophagus like a collar, and stitching in place there.

For your stomach to be operated on, a tube was inserted into your mouth and pushed through into your stomach. A camera is attached to the end of the tube. This camera then sends images to a screen during the examination. It can then be seen whether the tissue is healthy or changed.