Portal Vein Reconstruction using a Left Renal Vein Graft for a Patient with Hilar Cholangiocarcinoma

We report a patient with hilar cholangiocarcinoma who underwent combined portal vein reconstruction using a left renal vein graft. A 68-year-old man was referred to the hospital with a one-week history of dark urine and jaundice. Cholangiography through the percutaneous transhepatic biliary drainage catheter and magnetic resonance cholangiopancre-atography demonstrated complete obstruction of the hepatic primary confluence extended to the left secondary confluence. The patient underwent left hepatic lobectomy combined with total caudate lobectomy and extrahepatic bile duct resection. At operation, carcinoma invasion was observed from the portal trunk to the right portal branch. So, combined portal vein resection and graft interpose using left renal vein was performed. The caliber of left renal vein was wider than the right portal branch. No remarkable renal and hepatic dysfunction occurred postoperatively. In conclusion, left renal vein seems appropriate as an autograft when reconstructing the portal vein, especially main portal trunk, in patients with advanced hepatobiliary malignancies. It may be necessary to adjust the caliber when anastomosing the left renal vein to the right or left portal branch because the diameter of the left renal vein is usually wide.