Figure 7a. Selective injection via a microcatheter for type B-2 gastric varices. (a) Drawing illustrates selective injection via a microcatheter. (b) On a balloon-occluded venogram, the gastrorenal shunt is seen to communicate with the pericardiophrenic vein (arrowheads) and small collateral veins. (c) Fluoroscopic image shows a microcatheter that has been navigated through the shunt to the gastric varices. Arrow indicates the tip of the microcatheter. (d) Fluoroscopic image obtained during BRTO performed with selective injection of EOI via a microcatheter shows sufficient opacification of the varices.