The superior mesenteric artery arises from the aorta and is enveloped in fatty and lymphatic tissue (mesenteric pad). It forms an angle of about 38 º and 65º with the abdominal aorta (due in part, to the mesenteric fat pad). Because the third part of the duodenum courses between the angle formed by the superior mesenteric artery and aorta, any factor that sharply narrows the angle between the aorta and superior mesenteric artery can cause entrapment and compression of the third part of the duodenum resulting in superior mesenteric artery syndrome. This angle correlates with body mass index.
A variety of factors can contribute to the narrowing of the aorto-mesenteric angle:
There are some reports about more than one case in the same family and one report about affected identical twins, which suggests a genetic predisposition in some patients.
There are also several reported cases of superior mesenteric artery syndrome associated with celiac axis compression syndrome.
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These resources provide more information about this condition or associated symptoms. The in-depth resources contain medical and scientific language that may be hard to understand. You may want to review these resources with a medical professional.
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My daughter was just recently diagnosed with this rare condition. What kind of nutrition should she getting into her system right now? Is there a list of foods that will help her gain weight until she can get into her doctor? See answer
I have been recently diagnosed with superior mesenteric artery syndrome. Can you provide me with information about this condition? See answer