Inferior Description of the Individual Segments Composing the Pancreas

Description

Viewed from the inferior (caudal) aspect, the pancreas is organized into its regional segments, with the caput (head) seated to the right in the duodenal C-loop and the collum (neck) narrowing medially as it transitions into the corpus (body). From this vantage, the uncinate process projects posteriorly and inferiorly from the head, passing medial to the second part of the duodenum and wrapping toward the mesenteric root. The caudal surface of the body courses leftward toward the cauda (tail), approaching the splenic hilum, while the anterior and posterior borders define the gland’s flattened profile against the posterior abdominal wall. Orientation from below clarifies relationships that drive operative planning. The neck overlies the confluence forming the portal vein, and the uncinate process lies in the neighborhood of the superior mesenteric vessels, a relationship that dictates dissection planes in pancreaticoduodenectomy and influences margin assessment in pancreatic head carcinoma. This perspective also supports teaching of how pancreatitis-associated inflammatory change can track along retroperitoneal fascial planes and why fluid collections may extend inferiorly toward the mesentery. Faculty can integrate this plate into gross anatomy and GI surgical anatomy teaching when introducing pancreatic divisions, the developmentally distinct uncinate process, and the head–neck junction as a landmark for vascular control. It also reads well in hepatopancreatobiliary atlases, operative manuals, and patient-education materials explaining the regional terminology used in imaging reports (head, neck, body, tail). Anatomical accuracy verified by SciePro's Medical Advisory Board.