Superior mesenteric artery syndrome as a result of enlarged abdominal aortic aneurysm

Preoperative enhanced computed tomographic imaging showing large abdominal aortic aneurysm and dilated proximal duodenum. The third part of duodenum was sandwiched between superior mesenteric artery and abdominal aortic aneurysm. An, Aneurysm; SMA, superior mesenteric artery.

Preoperative barium duodenographic results revealed dilatation of duodenum and barium retention within duodenum. Note string-like structure that compressed the duodenum ( arrows).

Postoperative enhanced computed tomographic results. A wide space between superior mesenteric artery and aortic wall was observed, showing release of compression of the third part of the duodenum. SMA, Superior mesenteric artery.

Postoperative barium duodenographic results revealed no dilatation and no barium retention within the duodenum.