Figure 13a. (a) Balloon-occluded venogram of the gastrocaval shunt shows multiple collateral veins, a finding that is typical of type B-3 gastric varices, although no gastric varices are seen. A pacemaker catheter (arrows) is positioned in the right ventricle. Arrowheads indicate the balloon catheter. (b) Venogram obtained after embolization of these collateral veins with coils (arrows) reveals that EOI injected via a microcatheter navigated close to the gastric varices through the balloon catheter has filled the varices well.