ligation, the patient was anti-coagulated with 5.0 mg fondaparinux to prevent portal vein lumen oblitera-tion. An eight centimeter-long, ten millimeter nomi-nal diameter, Viatorr endoprosthesis (W.L. GORE & Associates Inc., Flagstaff, AZ, USA) was placed be-tween the right hepatic vein and the right branch of the portal vein..