The superior mesenteric vein (SMV) lies directly anterior to the uncinate process of the pancreas. The uncinate process wraps around the posterior aspect of the SMV and SMA. The portal vein and IVC lie more posteriorly in relation to the pancreatic head.
According to Moore’s Clinically Oriented Anatomy:
“The superior mesenteric vein crosses anterior to the uncinate process of the pancreas.”
[Reference:, Moore KL, Dalley AF, Agur AMR. Clinically Oriented Anatomy. 8th ed. Wolters Kluwer, 2018., Gray’s Anatomy for Students, 4th ed., Elsevier, 2019., —]
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