POSTER SESSION V Wednesday, February 15, 2006   —  9:30 AM - 12:00 Noon Exhibit Level BONE & SOFT TISSUE 1 Gastrointestinal Stromal Tumors (GISTs) Of The Jejunum And Ileum - A Clinicopathologic, Immunohistochemical And Molecular Genetic Study Of 906 Cases Prior To Imatinib With Long-Term Follow-Up (56) M Miettinen, H Makhlouf, LH Sobin, J Lasota - AFIP, Washington, DC 2 Neurofibromatosis Type 1-Related Gastrointestinal Stromal Tumor: Special Emphasis On KIT And PDGFRA Mutations, Loss Of 14q And 22q, And Activation Of MAPK Pathway (76) H Yamamoto, M Imamura, N Nakamura, T Takahira, Y Oda, T Yao, M Tsuneyoshi - Kyushu University, Fukuoka, Japan 3 Gardner Fibroma (GAF): A Clinicopathologic and Immunohistochemical Analysis of 42 Patients (27) CM Coffin, JL Hornick, H Zhou, CD Fletcher - Primary Childrens Medical Center/University of Utah, Salt Lake City, UT; Brigham & Women's Hospital/Harvard University, Boston, MA 4 Immunohistochemistry for Beta-Catenin Is Specific, but not Sensitive, in the Diagnosis of Desmoid Fibromatosis (24) JW Carlson, CD M Fletcher - Brigham & Women's Hospital, Harvard Medical School, Boston, MA 5 The Hedgehog Signaling Pathway In Synovial Sarcoma: Mutational And Functional Analysis (58) T Motoi, T Saito, M Ladanyi - Memorial Sloan-Kettering Cancer Center, New York, NY 6 The Wnt/²-Catenin Signaling Pathway In Synovial Sarcoma: Mutational And Functional Analysis (68) T Saito, T Motoi, M Ladanyi - Memorial Sloan-Kettering Cancer Ceter, New York, NY 7 The Utility Of Cytogenetics, FISH, And RT In Situ PCR For The Diagnosis Of Synovial Sarcoma (63) JA Plaza, D Suster, GJ Nuovo - Ohio State University Medical Center, Columbus, OH 8 Immunohistochemical And Molecular Profiling Of Human Synovial Sarcomas Xenotransplanted Into Nude Mice. A Tissue Microarray-Based Study (51) A Llombart-Bosch, M Subramaniam, S Navarro, A Pellin, JA Lopez-Guerrero, C Carda, JA Heredia, PLG Sabater - University of Valencia, Fundacion Instituto Valenciano de Oncologia, Valencia, Spain; University of Jaime I, Castellon, Spain 9 Myxoid/Round Cell Liposarcoma: Beyond the Round Cell Paradigm (64) CG Przybycin, DG Thomas, LH Baker, DR Lucas - University of Michigan, Ann Arbor, MI 10 Gene Expression Analysis of Mixed Liposarcoma. (26) KU Choi, JY Kim, HJ Kang, DH Shin, HW Kim, CH Lee, DY Park - Pusan National Univeristy College of Medicine, Busan, Korea 11 Cytogenetic Analysis of Myxoid Soft Tissue Tumors by Array-based Comparative Genomic Hybridization (60) T Ohguri, M Hisaoka, S Kawauchi, K Sasaki, H Hashimoto - University of Occupational and Environmental Health, Kitakyushu, Fukuoka, Japan; Yamaguchi University School of Medicine, Ube, Yamaguchi, Japan 12 Molecular Detection Of FUS-CREB3L2 Fusion Transcripts Of Low Grade Fibromyxoid Sarcoma By RT-PCR Using Formalin-Fixed, Paraffin-Embedded Tissues (53) A Matsuyama, M Hisaoka, S Shimajiri, H Hashimoto - University of Occupational and Environmental Health, Kitakyushu, Fukuoka, Japan 13 Epithelioid Variant Of Myxofibrosarcoma: Expanding The Morphologic Spectrum Of Myxofibrosarcoma (59) AF Nascimento, F Bertoni, CD M Fletcher - Brigham and Women's Hospital and Harvard Medical School, Boston, MA; Istituti Ortopedici Rizzoli, Bologna, Italy 14 Genomic Gains Of COL1A1-Pdgfb Copies Occur In Fibrosarcomatous Transformation Of Dermatofibrosarcoma Protuberans (20) JJ Abbott, M Erickson-Johnson, AG Nascimento, AM Oliveira - Mayo Clinic, Rochester, MN 15 Cluster Analysis of Immunohistochemical Profiles in Melanoma and MPNST: Phenotypic Continuum and Diagnostic Strategy (75) AJ Wu, DG Thomas, DR Fullen, DR Lucas - University of Michigan, Ann Arbor, MI 16 EWS-CREB1: A Recurrent Variant Fusion In Clear Cell Sarcoma Associated With Gastrointestinal Location And Absence Of Melanocytic Differentiation (21) CR Antonescu, K Nafa, P Dal Cin, M Ladanyi - Memorial Sloan-Kettering Cancer Center, New York, NY; Brigham and Women's Hospital, Boston, MA 17 Analysis Of Protein Expression Of c-Kit And Gene Mutation Of c-Kit and Pdgfr In Ewing Sarcomas (34) I Do, ES Araujo, RK Kalil, P Bacchini, F Bertoni, KK Unni, YK Park - Kyung Hee University Hospital, Seoul, Republic of Korea; University of Buenos Aires, Larrea 1231, Buenos Aires, Argentina; Rede Sarah de Hospitais do Aparelho, Brasilia, Distrito Federal, Brazil; Istituto Ortopedico Rizzoli, Bologna, Italy; Mayo Clinic, Mayo Foundation, Rochester, MN 18 Ewing's Sarcoma of Bone: The Detection Of Specific Transcripts In A Large, Consecutive Series Of Formalin Fixed, Decalcified, Paraffin-Embedded Tissue Samples Using The Reverse Transcriptase-Polymerase Chain Reaction (52) DC Mangham, A Williams, DJ McMullan, VP Sumathi, J McClure - Royal Orthopaedic Hospital, Birmingham Women's Hospital, Birmingham, United Kingdom; Robert Jones & Agnes Hunt Orthopaedic Hospital, Shropshire, United Kingdom 19 Serine/Threonine Kinase Mirk/Dyrk1B Mediates Survival In Rhabdomyosarcomas (71) SS Shah, SE Mercer, DZ Ewton, A Naqvi, E Friedman - State University of New York - Upstate Medical University, Syracuse, NY 20 Correlation of Fluorescence In Situ hybridization (FISH) of Formalin-Fixed Tissue with RT-PCR and/or Cytogenetics in the Detection of Rearrangements of the FKHR (13q14) Gene in Alveolar Rhabdomyosarcoma (35) E Downs-Kelly, D Lopez-Terrada, M Hartke, J Goldblum, R Tubbs, M Skacel - Cleveland Clinic Foundation, Cleveland, OH; Texas Children's Hospital and Baylor College of Medicine, Houston, TX