A 4 years boy with fulminant hepatitis due to virus A, underwent a temporary auxiliary liver transplantation. The graft which consisted in an adult reduced-liver, was implanted orthotopically after a left hepatectomy was performed on the recipient own liver. A good liver function was immediately restituted and the remaining native liver, that was 90% necrotic at time of transplantation, regained normal histological structure within 3 months. The auxiliary graft was then removed and immunosuppressive therapy permanently stopped.