Duodenal obstruction associated with an abdominal aortic aneurysm.

Aortoduodenal syndrome is a rare clinical entity characterized by an upper gastrointestinal obstruction in association with an abdominal aortic aneurysm. The exact mechanism of obstruction is unknown. We present a case of aortoduodenal syndrome and discuss the interplay of the aneurysm and duodenum in the development of the duodenal obstruction.