POSTER SESSION VI Wednesday, February 15, 2006   —  1:00 - 4:00 PM Exhibit Level NEUROPATHOLOGY 160 Expression of the Id2 Helix-loop-helix Protein in Hodgkin and Non-Hodgkin Lymphomas (1027) CV Cotta, V Leventaki, LV Abruzzo, LJ Medeiros, GZ Rassidakis - UT MD Anderson Cancer Center, Houston, TX 161 The Controversial Nosology Of Schwannomas: Neurofilament Protein Staining Demonstrates Intra-Tumoral Axons In Many Schwannomas (1329) AF Nascimento, CD M Fletcher - Brigham and Women's Hospital and Harvard Medical School, Boston, MA 162 Discrepancies Between Frozen Section and Final Diagnoses in Central Nervous System Neoplasms (1332) TP Plesec, RA Prayson - Cleveland Clinic Foundation, Cleveland, OH 163 The Value Of Tandem MRI/CSF Evaluation For Predicting Disseminated Disease In Childhood Central Nervous System Neoplasms (1331) J Pang, T Tihan, A Banerjee - University of California San Francisco, San Francisco, CA; University of California San Francisco, San Francisco, CA 164 The Role of MIB-1 and CYCLIN D1 in WHO Grade II Pediatric Intracranial Ependymomas (1336) AG Saad, L Miles - Brigham and Women's Hospital, Boston, MA; Children's Hospital, Cincinnati, OH 165 CEACAM-1 Is Transiently Expressed In The Microvessels During Maturation Of Neuroblastic Tumors And Correlate With Up-Regulation Of VEGF In Differentiating Neuroblast/Ganglion Cells (1333) PL Poliani, M Ravanini, C D'ppolito, LD Notarangelo, L Bercich, L Tonegatti, C Wagener, F Facchetti - University of Brescia, Brescia, Italy; University of Brescia, Brescia, Italy; University of Brescia, Brescia, Italy; University of Hamburg, Hamburg, Germany 166 MGMT Promoter Methylation Status And Expression In Human Glioblastoma (1334) FJ Rodriguez, SN Thibodeau, RB Jenkins, KV Schowalter, BP O'Neill, CD James, C Giannini - Mayo Clinic, Rochester, MN 167 Expression of the Polycomb-Group Protein BMI1 in Astrocytic Tumors. An Immunohistochemical Study on 80 Cases (1338) R Tirabosco, G De Maglio, M Skrap, G Falconieri, S Pizzolitto - Udine General Hospital, Udine, Italy 168 Phosphohistone H3 (PHH3) Index In Diffuse And Anaplastic Astrocytomas: Correlation With Mitotic Index And Grading (1327) XL Liu, XJ Wang, N Chen, B Yang, W Yin, Q Zhou - West China Hospital, West China Medical School, Sichuan University, Chengdu, Sichuan, China 169 1p/19q Loss In Gliomas: Microsatellite Amplification In Comparison With FISH (1320) C Carrato, K Beyer, L Zamora, I Granada, I Roussos, C Balana, F Milla, A Ariza - Hospital Germans Trias i Pujol, Badalona, Barcelona, Spain 170 Immunohistochemical Staining For Peripheral Benzodiazepine Receptors In The Differential Diagnosis Of Low Grade Astrocytoma And Reactive Gliosis (1339) E Vlodavsky, M Gavish, JF Soustiel - Rambam Medical Center, The Faculty of Medicine Technion, Haifa, Israel 171 Diagnostic Utility Of Microtubule Associated Protein-2 In Separating Schwannoma From Meningioma Including The Fibrous Subtype (1321) KL Denning, RS Saad, JF Silverman, MT Tung, YL Liu - Allegheny General Hospital, Pittsburgh, PA 172 Melanocytic Differentiation in Epithelioid MPNSTs: A Series of 4 Cases (1337) MR Tanas, CL Corless, E Downs-Kelly, JR Goldblum, TO Nielsen, CC Ruttan, RB West, M Van de Rijn, BP Rubin - University of Washington, Seattle, WA; Cleveland Clinic Foundation, Cleveland, OH; University of BC, Vancouver, BC, Canada; Stanford University, Stanford, CA; Oregon Health and Science University, Portland, OR