Gastroduodenal Artery Behind Duodenum: Key Anatomy

The gastroduodenal artery passes behind the first part of the duodenum, so a posterior duodenal ulcer can erode into it, causing major upper GI bleeding. The superior mesenteric artery runs anterior to the third part of the duodenum.

• A posterior duodenal ulcer may erode into the gastroduodenal artery, causing significant upper GI bleeding.
• The superior mesenteric artery (SMA) passes anterior to the third part of the duodenum.

Automated summary

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