 - Disease-free survival 9 months after hepatic resection. Disease free survival defined as the absence of recurrent disease on conventional diagnostic imaging CT liverabdomen, CT chest. Comment: The study proposal assumes that patients unnecessarily operated in the conventional arm patients who would have had a positive PET for extrahepatic disease and negative CT for extrahepatic disease will show extrahepatic disease on conventional CT imaging within 9 months of randomization. This assumption is confirmed in a preliminary study conducted at our institute Langenhoff 2001a. 