“Promoting health care opportunities for under-insured individuals, promoting research for improved health care for all members with superior mesenteric artery syndrome, and is dedicated to educating both the medical community and the public about superior mesenteric artery syndrome symptoms to encourage early diagnosis.”

SMASRAS stands for Superior Mesenteric Artery Syndrome Research Awareness and Support. We are a registered 501c3 non-profit. It is our goal to assist the uninsured and under-insured in the U.S. receive the medical help they need to treat their SMAS. We also work under the name SMAS Patient Assistance.

Those diagnosed with SMAS can now apply for Grants. Please click here or select the Grant tab above.



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Donations may also be sent by mail to:

SMAS Patient Assistance
P.O. Box 555
Bonham, TX 75418

What is SMAS?

SMAS, or Superior Mesenteric Artery Syndrome, is the compression of the 3rd portion of the duodenum between the Abdominal Aorta (AA) and the Superior Mesenteric Artery (SMA). SMAS is also known as Wilkie’s Syndrome or Cast Syndrome. SMAS can develop naturally or due to traumatic injury. There are other related symptoms and syndromes such Nutcracker Syndrome, Pelvic Varicose Veins, Reverse Peristalsis, Gastroparesis, Gallbladder failure, and Malabsorption Syndrome.

Superior Mesenteric Artery Syndrome is a rare gastro-vascular illness that affects less than .013% of the world’s population.

GARD states: “Researchers have made several estimates of the prevalence rate of SMA syndrome in the population.  These estimates have ranged from 0.013% to 0.3% in the general population, which translates roughly to 41,000 to 96,000 Americans with SMA syndrome.[1][2][3]  Most of the prevalence rate estimates quoted in recent published articles can be traced back to studies done between 1956-1966.[4][5]  Recent studies to determine the prevalence rate of SMA syndrome do not seem to be available, making it difficult at present to give a more accurate estimate.”

1.  Welsch T, Buchler MW, Kienle P. Recalling superior mesenteric artery syndrome. Dig Surg. 2007;
2. Karrer FM, Jones SA: Superior mesenteric artery syndrome. Medscape Research. July 2015;
3.  Zaraket V, Deeb L: Wilkie’s syndrome or superior mesenteric artery syndrome: fact or fantasy? Case Rep Gastroen 2015; 9: 194-199. Retrieved from
4. Goin LS, Wilk SP. Intermittent ateriomesenteric occulusion of the duodenum. Radiology. 1956; 67: 729-737.
5. Nugent FW, Braasch JW, Epstein H: Diagnosis and surgical treatment of arteriomesenteric obstruction of the duodenum. JAMA. 1966; 196: 1091-1093