A 17-year-old man was seen at the hospital because of upper abdominal pain and vomiting. Upper gastrointestinal series revealed passage disturbance in the third portion of the duodenum. Superior mesenteric duodenal obstruction was suspected. Angiograpny confirmed obstruction which was along with the superior mesenteric artery, and the patient was diagnosed as superior mesenteric duodenal obstruction. This case was chronic type repeating upper abdominal pains and vomitings for the past 5 years. As the conservative treatment failed to improve the passage disturbance, duodenojejunostomy was performed on 9th hospital day, with successful outcome.
In a recent one decade from 1981 to 1990, 75 cases of this disease have been reported in Japan. Recently cases treated conservatively are increasingly seen, but it appears appropriate that operation is scheduled around 3 weeks later.