Ileocolic Vein, Posterior View

Description

Arising from the mesentery of the terminal ileum and cecal region, the ileocolic vein is traced posteriorly as it courses superiorly and medially toward the superior mesenteric vein. Tributaries consistent with venous return from the ileum, cecum, and proximal ascending colon converge near the ileocecal junction, with the vein lying anterior to the right psoas major region and deep to the overlying right colon and mesocolon. Posterior abdominal landmarks such as the inferior vena cava and abdominal aorta are visible in the background, with the ureters descending inferiorly toward the urinary bladder. Relationships read cleanly from back to front. Posterior orientation matters because the ileocolic vein is a frequent contributor to the gastrocolic trunk of Henle and sits in the operative corridor for right colectomy and ileocecal resection, where venous anatomy drives safe central vascular ligation. Small variations in the confluence with the superior mesenteric venous trunk can change the risk profile for bleeding during medial-to-lateral mobilization and D3 lymphadenectomy. Bleeding here is unforgiving. Use this artwork in surgical anatomy teaching for colorectal surgery, in atlas content on mesenteric venous drainage of the ileum and right colon, or in preoperative planning discussions that pair venous landmarks with CT venography or contrast-enhanced portal phase imaging. It also fits well in case-based modules on Crohn disease requiring ileocecal resection, or oncologic right hemicolectomy with complete mesocolic excision. Anatomical accuracy verified by SciePro's Medical Advisory Board.