Superior mesenteric artery syndrome in association with an abdominal aortic aneurysm.

Superior mesenteric artery (SMA) syndrome, also known as Wilkie syndrome, is a rare condition characterised by compression of the third part of the duodenum against the aorta by the SMA. This can cause symptomatic duodenal obstruction. It is rarely associated with an abdominal aortic aneurysm (AAA). We report the case of a male patient presenting with an AAA and recurrent upper gastrointestinal symptoms. SMA syndrome was diagnosed with imaging and was then successfully treated by aneurysm repair. This is the smallest AAA associated with SMA syndrome in the literature. We propose an anatomical mechanism for SMA syndrome in this case.