Definition of "duodenal" [du•o•de•nal]

• Of or pertaining to the duodenum- the first part of the small intestine. (adjective)

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• "Big Boy had what is known as the duodenal switch surgery."
• "This is caused by the descending portion of the duodenum, and is known as the duodenal impression."
• "The study, published in the Annals of Internal Medicine, followed 60 severely obese patients who were randomly assigned to either gastric bypass surgery or a more extensive procedure known as duodenal switch."