The right gastric vein drains the right part of the lesser curvature of the stomach and the pylorus. It runs in the lesser omentum and drains directly into the portal vein. It usually receives the prepyloric vein, which surgeons use as a landmark for the pylorus.
| Origin | Begins along the pyloric part of the lesser curvature of the stomach |
|---|---|
| Course | Runs to the right between the layers of the lesser omentum along the lesser curvature and drains directly into the portal vein |
| Branches |
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The prepyloric vein (of Mayo), a tributary of the right gastric vein, crosses the front of the pylorus and helps the surgeon identify the gastroduodenal junction. The right gastric vein is a minor portosystemic pathway compared with the left gastric vein, but it can enlarge in portal hypertension. It is divided during distal gastrectomy.
Bleeding from the vein during mobilisation of the lesser curvature, controlled by ligation without long-term consequence.
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