POSTER SESSION IV Tuesday, March 9, 2004   —  1:00 - 4:30 PM Exhibit Hall B and C NEUROPATHOLOGY 149 Glioblastomas in the Older Old (1335) BK Kleinschmidt-DeMasters, KO Lillehei, M Garcia - University of Colorado Health Sciences Center, Denver, CO 150 Population Based Study on the Incidence, Survival Rates, and Genetic Profile of Glioblastomas (1339) H Ohgaki, S Horstmann, P Dessen, B Jourde, T Nishikawa, C Burkhard, PL Di Patre, P Kleihues - International Agency for Research on Cancer, Lyon, France 151 Correlation of Immunohistochemical Expression of p21, p27 and PDGFR with Survival in Glioblastoma Multiforme (1327) AG Chiesa, LA Rybicki, RA Prayson - The Cleveland Clinic Foundation, Cleveland, OH 152 The Relation of Progesterone Receptor and Ki-67 with Tumor Differentiaton and Biology in Astrocytomas (1350) S Zorludemir, A Karaoglan, S Erdogan, M Ergin, T Erman - Cukurova University, Medical Faculty, Adana, Turkey 153 Distinctive Genetic Aberrations of Low-Grade and High-Grade Gliomas Defined by Array-Based Comparative Genomic Hybridization (1348) B Xu, JD Pettay, M Skacel, M Hartke, RA Prayson, GH Barnett, RR Tubbs - The Cleveland Clinic Foundation, Cleveland, OH 154 Detection of Oncogene Amplications in Medulloblastomas by Comparative Genomic Hybridization and Array Based Comparative Genomic Hybridization (1338) HK Ng, CYK Tong, ABY Hui, JCS Pang - The Chinese University of Hong Kong, Hong Kong 155 Detection of C-Myc, N-Myc, and HER2 Gene Amplification, Chromosome Aneuploidy, and Their Intratumoral Heterogeneities by Chromogenic In Situ Hybridization (CISH™) in Archival Medulloblastomas (1349) J Zhao, R Wu, A Marquez, J Tao, Z Shi - R&D, Zymed Laboratories, Inc., South San Francisco, CA 94080 156 Analysis of Cromosome 7 in Pediatric and Adult Ependymomas by Chromogenic In Situ Hybridization (CISH) (1345) M Santi, R Ronchetti, E Rushing, M Quezado - Children's Hospital, Washington, DC; National Institutes of Health, Bethesda, MD; Armed Forces Institutes of Pathology, Washington, DC 157 Gene Expression Profiling of Distinct Regions in Normal Autopsy Brains: A Study of Three Cases (1333) MA Jorden, S Zhu, M van de Rijn - Stanford University Medical Center, Stanford, CA 158 Telomere Length Assessment in Human Gliomas Using the TEL-FISH Method (1329) S Freeman, P Kashireddy, E Bigio, MS Rao, LK Diaz - Northwestern University Feinberg School of Medicine, Chicago, IL 159 Correlation of p53 Immunohistochemistry with TP53 Mutations in Gliomas (1347) I Warshawsky, B Shadrach, M Commane, RA Prayson, GH Barnett, RR Tubbs, SM Staugaitis - Cleveland Clinic Foundation, Cleveland, OH 160 Expression of Cytokeratin-7 (CK7), Cytokeratin-20 (CK20), Gross Cystic Disease Fluid Protein-15 (GCDFP-15), Thyroid Transcription Factor-1 (TTF-1) and Thyroglobulin in Choroid Plexus and Its Tumors (1340) G Owor, XH Yang, CE Sheehan, JS Ross, J Qian - Albany Medical College, Albany, NY 161 Immunoreactivity of CD10 and Inhibin Alpha in Differentiating Hemangioblastoma of the Brain from Metastatic Renal Cell Carcinoma (1334) S-M Jung, T-T Kuo - Chang Gung Memorial Hospital and Chang Gung Children Hospital, TaoYuan, Taiwan 162 Thyroid Transcription Factor-1 Staining Useful in Identifying Brain Metastases of Pulmonary Origin (1342) AL Prok, RA Prayson - The Cleveland Clinic Foundation, Cleveland, OH 163 OCT-4 Is Preferentially Expressed in Primary Intracranial Germinomas of the Pineal Region (1331) EM Hattab, L Cheng - Indiana University School of Medicine, Indianapolis, IN 164 Recurrent Chromosomal Imbalances and Structurally Abnormal Breakpoints within Complex Karyotypes of Malignant Peripheral Nerve Sheath Tumor and Malignant Triton Tumor: A Cytogenetic and Molecular Cytogenetic Study (1323) LA Bruch, RS Bridge, JR Neff, S Naumann, P Althof, JA Bridge - University of Nebraska Medical Center, Omaha, NE 165 Apolipoprotein D Is Down-Regulated during Malignant Transformation of Neurofibromas (1332) S Hunter, S Weiss, J Goldblum, A Young, J Wilcox, J Arbiser, D Monson, D Jaye, V Varma - Emory University School of Medicine, Atlanta, GA; Cleveland Clinic Foundation, Cleveland, OH; Atlanta VA Medical Center, Atlanta, GA 166 Expression of Matrix Metalloproteinases MMP-9 and MMP-2 and Their Tissue Inhibitors TIMP-1 and TIMP-2 in Primary Central Nervous System Lymphomas (PCNSLs) (1336) WA Lavezzi, DM Vincenti, CE Sheehan, JS Ross, J Qian - Albany Medical College, Albany, NY 167 Expression of Enamel Proteins and LEF1 in Adamantinomatous Craniopharyngioma: Evidence for Its Nature as an Ectopic Odontogenic Tumor (1346) S Sekine, T Takata, T Shibata, M Mori, Y Morishita, M Noguchi, T Uchida, Y Kanai, S Hirohashi - National Cancer Center Research Institute, Tokyo, Japan; Hiroshima University, Hiroshima, Japan; Mitsui Memorial Hospital, Tokyo, Japan; Tsukuba University, Ibaraki, Japan 168 Nitric Oxide Synthase 3-Mediated Neurodegeneration Following Experimental Gene Delivery into the Brain (1328) SM de la Monte, A Parikh, BT Maron, K Doiron, JR Wands - Rhode Island Hospital, Providence, RI; Brown Medical School, Providence, RI 169 Comparing Brain Damage in a Human and Mouse Form of Systemic Autoimmune Lupus Erythematosus (1321) DA Ballok, M Sur - McMaster University, Hamilton, ON, Canada