Chronic nausea as the leading symptom: an indication for double-contrast examination of the upper intestinal tract following normal gastroscopy.

We report a patient with chronic nausea as the leading symptom of a primary carcinoma of the duodenum located at the flexura duodeno-jejunalis. The tumour was not reached at gastroscopy, which was performed twice. Since this area usually cannot be seen upon gastroscopy or upon small bowel enteroclysma according to Sellink, a double-contrast investigation of the upper gastrointestinal tract using a hypotonic agent should be performed when nausea persists although gastroscopy is normal.