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Updated: May 19, 2026

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Published on: October 14, 2022
Anatomy and classification of gastrorenal and gastrocaval shunts
1Department of Radiology and Medical Imaging, Division of Interventional Radiology, University of Virginia Health System, Charlottesville, Virginia.
Abstract:
The gastric varices communicate with gastrorenal and gastrocaval shunts and are classified according to the pattern of venous inflow into three types, which differ in the number and location of the inflow veins. The gastric varices are also classified according to their venous drainage into four different types, reflecting the size and number of collateral veins communicating with the gastric varices and the gastrorenal/gastrocaval shunt. Lastly, the gastric varices are classified according to their appearance on balloon-occluded retrograde venography into five grades representing the degree of opacification of the gastric varices and the collateral veins. Understanding these anatomic classifications is crucial in planning endovascular obliteration of gastric varices.
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