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Images show food material within the upper thoracic oesophagus which is somewhat dilated. Distal to this there is a 5 cm irregular narrowing of the mid thoracic oesophagus with proximal shouldering. Beyond this there is a short segment of non-strictured oesophagus before there is another 5 cm segment of smooth luminal narrowing extending to the gastro-oesophageal junction.