ICD K31.5ORPHA:622099SMAS

Superior Mesenteric Artery Syndrome

Superior mesenteric artery syndrome is a rare condition in which part of the duodenum, the first section of the small bowel, is squeezed between the superior mesenteric artery and the aorta. This blocks food from passing through and causes vomiting, bloating, pain after eating and weight loss. Treatment starts with nutritional support to restore weight, and surgery is considered when this does not help.

274
Articles
5
Trials
Updated
18 September 2026
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Common Questions

What is Superior Mesenteric Artery Syndrome?

Superior mesenteric artery syndrome is a rare condition in which part of the duodenum, the first section of the small bowel, is squeezed between the superior mesenteric artery and the aorta. This blocks food from passing through and causes vomiting, bloating, pain after eating and weight loss. Treatment starts with nutritional support to restore weight, and surgery is considered when this does not help.

How many clinical trials are available for Superior Mesenteric Artery Syndrome?

RareWays currently indexes 5 clinical trials for Superior Mesenteric Artery Syndrome, of which 2 are actively recruiting. Trial availability changes as new studies are registered — check the trials tab for current status.

Where does the research data for Superior Mesenteric Artery Syndrome come from?

RareWays aggregates research from PubMed, Europe PMC, OpenAlex, and ClinicalTrials.gov. Data is updated regularly by Rocky, RareWays' automated research engine. All articles and trials link directly to their original sources.

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This information is for general awareness only.

For guidance specific to your situation, please speak with your healthcare team.