Abstract

To analyze the vascular anatomy and complications of the right colon under laparoscope. Videotapes of 55 laparoscopic extended right hemicolectomy with D3 lymphadenectomy were reviewed and the anatomic relationship and bleeding vessels were determined. The superior mesenteric vein, superior mesenteric artery, ileocolic artery, and middle colic artery were present in all the patients. The right colic artery was present in 45.5%(25/55) of the patients. The incidence of the gastrocolic venous trunk was 74.5%. The overall incidence of intraoperative bleeding was 43.6%. Vessels in the pre-pancreatic region including the right gastroepiploic artery, the gastrocolic venous trunk, and its tributaries had a higher risk of bleeding than the middle colic vein and artery (16.4% vs. 14.5%). Intraoperative bleeding significantly prolonged the overall operative time and lymphadenectomy time. The vascular anatomy of the right colon is intricate and variable and laparoscopic extended right hemicolectomy with D3 lymphadenectomy is associated with a high risk of hemorrhage. Understanding the vessels anatomic relationship of the right colon is valuable to decrease vascular complication.

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