Figure 2. Gross specimen of TIPS tract longitudinally bisected included the portal vein(PV), hepatic parenchyma, hepatic vein and inferior vena cava (IVC). (a) Gross specimen of the control group shows an occluded shunt filled with whitish and yellowish tissue (arrows). (b) The treatment group shows little occlusion relatively and a smooth surface in the internal surface of shunt (arrows).