Living-donor liver transplantation using the left liver, with special reference to vein reconstruction.

The authors describe their techniques for hepatic vein reconstruction, devised for safe living-donor liver transplantation using a left liver graft. End-to-end anastomosis of the hepatic veins is performed to prevent an outflow occlusion. To ensure adequate hepatic venous flow, it is necessary to obtain a wide ostium and sufficient length of the hepatic vein for anastomosis, which should be secured by venoplasty of the hepatic veins of the graft and the recipient. A left liver with a caudate lobe graft is useful for overcoming the problem of a small graft. Reconstruction of the short hepatic vein of the caudate lobe may allow this portion to regenerate at the same rate as the left liver. In a left liver graft without the trunk of the middle hepatic vein, reconstruction of a tributary of this vein might be necessary to prevent graft congestion in segment IV. Color Doppler ultrasonography or a hepatic arterial clamping test should be performed in donor hepatectomy to evaluate the need for middle hepatic vein reconstruction.