POSTER SESSION I Monday, February 13, 2006   —  9:30 AM - 12:00 Noon Exhibit Level NEUROPATHOLOGY 183 PTEN Loss By Gliomas Induces Endothelial Tissue Factor Expression (1322) A Djalilvand, Y Rong, DL Durden, EG Van Meir, DJ Brat - Emory University, Atlanta, GA 184 HER-2/neu Expression In Glioblastoma Multiforme (1326) DM Haynik, AA Roma, RA Prayson - Cleveland Clinic Foundation, Cleveland, OH 185 Loss Of Smad4 Expression In A Subset Of Primary Central Nervous System Lymphomas (PCNSL) (1330) G Owor, XH Yang, CE Sheehan, JS Ross, J Qian - Albany Medical College, Albany, NY 186 The Value Of Epidermal Growth Factor Receptor In Pediatric Ependymomas: An Immunohistochemical Study (1335) AG Saad, L Miles, A Kendler, G Decourten-Myers - Brigham & Women's Hospital, Harvard Medical School, Boston, MA; Children's Hospital, Cincinnati, OH; University of Cincinnati, Cincinnati, OH