[1] CHU Hop Sud, Serv Hemato Oncol Pediatr, 16,Blvd Bulgarie, F-35203 Rennes, France
[2] Hop Paul Brousse, Ctr Hepatobiliaire, Inserm U785, F-94800 Villejuif, France
[3] Inst Gustave Roussy, Serv Pathol Morpholog, F-94805 Villejuif, France
[4] CHU Bicetre, Dept Chirurg, F-94270 Le Kremlin Bicetre, France
[5] CHU Bicetre, Serv Radiol Pediatr, F-94270 Le Kremlin Bicetre, France
[6] CHU Hop Sud, Serv Radiol & Imagerie Med, F-35203 Rennes, France
[7] Inst Gustave Roussy, Dept Pediat, F-94805 Villejuif, France