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Figure 2: UGI barium examination showing a dilated esophagus in its abdominal and thoracic parts (a-d showing the evolution over time up to 20 min). UGI: Upper gastrointestinal

Figure 2: UGI barium examination showing a dilated esophagus in its abdominal and thoracic parts (a-d showing the evolution over time up to 20 min). UGI: Upper gastrointestinal