POSTER SESSION III Tuesday, March 1, 2005   —  9:30 AM - 12:00 Noon Convention Center, Exhibit Hall B NEUROPATHOLOGY 141 Angiogenic Patterns and Their Quantitation in High Grade Astrocytic Tumors (1362) S Sharma, MC Sharma, C Sarkar - All India Institute of Medical Sciences, New Delhi, Delhi, India 142 Bcl-x: An Anti-Apoptotic Protein Showing Promise as an Alternative Marker for Glial Cells (1365) K-B Tan, MH-K Koh, S-Y Tan - National University of Singapore, Singapore; Tan Tock Seng Hospital, Singapore 143 Differential Amplification and Expression of CDK6 between Low-Grade Astrocytoma and Glioblastoma Multiforme (1369) B Xu, J Pettay, M Skacel, RA Prayson, GH Barnett, RR Tubbs - The Cleveland Clinic Foundation, Cleveland, OH 144 Fascin Expression in 90 Patients with Glioblastoma Multiforme (1358) RA Prayson, AA Roma - Cleveland Clinic Foundation, Cleveland, OH 145 Use of Tissue Microarrays in the Immunohistochemical Analysis of Olig-2 and Ki-67 in Gliomas. A Quality Control Study (1351) A Ly, K Ligon, C Bush, T Tihan - University of California, San Francisco, San Francisco, CA; Dana-Farber Cancer Institute, Boston, MA 146 Correlation between Real Time RT-PCR Expression of PTEN and Tumoral Grade in Astrocytomas (1348) MA Idoate, E Andion, J Garcia-Foncillas, A Panizo, MD Lozano, G Toledo, J Sola, FJ Pardo-Mindan University of Navarra, Pamplona, Navarra, Spain; University of Navarra, Pamplona, Navarra, Spain 147 Diagnostic Utility of Epithelial Markers in Separating Choroid Plexus Papillary Neoplasms from Metastatic Carcinomas with Papillary Architecture (1370) SX Yan, YL Liu, M Tung, JF Silverman Allegheny General Hospital, Pittsburgh, PA 148 Cyclooxygenase-2 Expression in 100 Patients with Ependymal Tumors (1359) AA Roma, RA Prayson Cleveland Clinic Foundation, Cleveland, OH 149 Primary Intracranial Germinoma: A Retrospective Clinicopathologic Analysis of 27 Cases (1347) EM Hattab, K Pradhan, AC Douglas-Akinwande - Indiana University School of Medicine, Indianapolis, IN 150 Immunohistochemical Expression of OCT4 in Primary Central Nervous System Germ Cell Tumors (1350) S-M Jung, TH Jaing, CK Tseng, PH Chu, T Kuo - Chang Gung Memorial Hosptital and Chang Gung Children Hospital, Taoyuan, Taiwan 151 Factor XIIIa Expression in Primary CNS Lymphomas (1366) P Treseler, S Parikh, A Shen, J Karch, M Shuman, J Rubenstein - University of California San Francisco, San Francisco, CA 152 Hemispheric Extraventricular Glioneurocytoma: A Clinicopathological Review with Immunohistochemical Profile (1344) D El Demellawy, M Sur, J Provias McMaster University, Hamilton, ON, Canada 153 Three Cases of Pituitary Cushing Adenomas with Concomitant GH and/or PRL Production from a Large Series of Pituitary Adenomas (1363) M Suzuki, M Yamazaki, N Sanno, A Teramoto, YR Osamura - Nippon Medical School, Tokyo, Chiyodaku, Japan; Tokai University School of Medicine, Kanagawa, Isehara, Japan 154 Uveal Melanoma and Monosomy of Chromosome 3 (1368) RJ Tuthill, M Skacel, EC Borden, RR Tubbs Cleveland Clinic Foundation, Cleveland, OH 155 Colorectal Intramucosal Perikarya of Ganglion Cells (1367) VW Tunru-Dinh, ML Wu University of California, Irvine College of Medicine, Irvine, CA 156 Does Biopsying Multiple Skeletal Muscle Sites at the Same Time Increase Diagnostic Yield? (1357) RA Prayson Cleveland Clinic Foundation, Cleveland, OH 157 Bax/Bcl-2 Ratio as a Predictive Marker for Therapeutic Response, after Thymectomy in Patients with Myasthenia Gravis (1360) S Salakou, AC Tsamandas, E Tsibri, E Apostolakis, D Bonikos, T Papapetropoulos, D Dougenis - Univ. of Patras, Greece 158 Expression of Herpes Simplex Virus (HSV) Entry Receptor Nectin-1 in Normal and Neoplastic Human Nervous System Tissues (1353) SD Oh, G Guzman, D Shukla, T Valyi-Nagy Univ. of Illinois at Chicago, Chicago, IL