Abstract
We described 2 cases of adult-to-adult liver transplantation using right lobe grafts donated by 2 patients suffering from focal nodular hyperplasia, the volumes of which were 360 cm3 and 220 cm3. This study was performed in compliance with the Declaration of the Helsinki. For preparation of the graft, back-table hepatic venous outflow reconstruction, including replacement of the retrohepatic inferior vena cava and bridging of hepatic segment V5/V8, was performed by using prosthetic vessel grafts. The liver grafts after subtracting the weight of focal nodular hyperplasia functioned well without serious small-for-size syndrome or graft dysfunction in spite of graft-to-recipient weight ratio less than 0.8%. This suggested the functioning of hepatocyte within focal nodular hyperplasia, which avoided graft deficiency. These 2 recipients were given not only conventional immunosuppressants (tacrolimus and mycophenolate sodium) but also anticoagulants (low molecular weight heparin and warfarin). Thrombosis of the prosthetic inferior vena cava 1 month after transplant in recipient 1 was treated by placement of intravascular stent. Biliary duct anastomotic stricture 2 weeks after transplant in recipient 2 was treated by placement of biliary stent. These 2 recipients remain well at more than 2 years post-transplant. These successful explorative cases highlight the safe use of a graft containing focal nodular hyperplasia. The partial liver resection grafts with focal nodular hyperplasia could be applied to the patients on the waiting list for liver transplantation.
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