POSTER SESSION I Monday, March 08, 2004   —  9:30 AM - 12:00 Noon Exhibit Hall B and C PEDIATRIC PATHOLOGY 190 Pediatric Hepatocellular Carcinomas Are Distinct from Adult Hepatocellular Carcinomas (1388) WM Klein, EP Molmenti, JK Boitnott, MS Torbenson - The Johns Hopkins Medical Institutions, Baltimore, MD 191 Expression of Topoisomerase II Alpha in Wilms Tumors and Its Potential Prognostic Value (1395) M Turkyilmaz, M Tretiakova, K Andrey, V Papavero, XJ Yang - University of Chicago, Chicago, IL; Northwestern University, Chicago, IL