POSTER SESSION V Wednesday, February 15, 2006   —  9:30 AM - 12:00 Noon Exhibit Level GASTROINTESTINAL PATHOLOGY 69 Incipient DNA Mismatch Repair Deficiency in Large Non-Dysplastic Serrated Polyps of the Colorectum (525) K Oh, M Redston - Brigham and Women's Hospital, Boston, MA 70 Mismatch Repair Protein Deficiency and Precursor Intraepithelial Serration in Colorectal Adenocarcinomas (463) AM Bellizzi, CH Moskaluk, EB Stelow - University of Virginia, Charlottesville, VA 71 Serrated Colorectal Polyps: Morphology and Expression of Mismatch Repair Gene Proteins and P504S (549) ME Sullivan, RK Orr, WG Watkin - Evanston Northwestern Healthcare, Evanston, IL 72 Sessile Serrated Polyp/Adenoma: Challenging Discrimination From Other Colonic Polyps (487) AB Farris, A Srivastava, J Misdraji, GY Lauwers, M Mino-Kenudson - Massachusetts General Hospital, Boston, MA 73 Synchronous And Metachronous Gastrointestinal Polyps In Patients Diagnosed With Sessile Serrated Adenoma (489) H Fenton, EA Montgomery, CA Iacobuzio-Donahue - The Johns Hopkins Hospital, Baltimore, MD 74 Molecular Analysis of "Filiform" Serrated Adenomas: High-Level Microsatellite Instability Does Not Play a Role in the Pathogenesis of These Distinct Neoplasms (568) RK Yantiss, K Oh, M Redston, RD Odze - Weill Medical College of Cornell University, New York, NY; Brigham & Women's Hospital, Boston, MA 75 Squamous Cell Papillomas of the Esophagus: A Study of 19 lesions for Human Papillomavirus by In Situ Hybridization and the Polymerase Chain Reaction and p16 immunoprofile (515) OlgaL Mejia, S Sanchez, J Garces, L Navarro, V Reyes, J Saldivar - UPAEP Hospital, Laboratorios Clinicos de Puebla, Puebla, Mexico 76 Gastric Hyperplastic Polyps In Post Transplant Patients: A Clinicopathologic Study (496) KD Jewell, DL Toweill, PE Swanson, MP Upton, MM Yeh - University of Washington Medical Center, Seattle, WA 77 "Juvenile" Polyps in Adults: A Clinicopathologic Study (530) CW Pitchford, DB Polk, F Revetta, MK Washington - Vanderbilt University Medical Center, Nashville, TN 78 Stroma-Rich Hyperplastic Polyps: A Clinicopathologic And Immunohistochemical Study Of 18 Cases (470) EJ Burks, JL Hornick, RD Odze - Brigham and Women's Hospital and Harvard Medical School, Boston, MA 79 Colonic Mucosal Neurofibromatous Polyps: Clinicopathological Evaluation (539) J Scudiere, D Cimbaluk, S Jakate - Rush University, Chicago, IL 80 Chasing Colonic "Polyps": Features that Predict Pathologic Lesions which Account for Endoscopically Apparent Polyps (532) AD Polydorides, MP Bramlage, RK Yantiss - Weill Medical College of Cornell University, New York, NY 81 Low Rate of BRAF Mutations in Cholangiocarcinoma (471) GC Calilao, RL Seargent, JL Hunt, AM Krasinskas - University of Pittsburgh Medical Center, Pittsburgh, PA 82 Overexpression Of Fatty Acid Synthase In Gallbladder Carcinoma Is An Independent Marker Of Poor Survival (508) CF Li, WW Huang, CN Lin, D Lu, HY Huang - Chi-Mei Foundation Medical Center, College of Medicine, National Cheng Kung University, Tainan, Taiwan; Chi-Mei Foundation Hospital, Liouying, Taiwan; Chang Gung Memorial Hospital, Kaohsiung, Taiwan 83 Expression Profiling Of Primary And Metastatic Pancreatic Cancers Indicate Maintenance Of Gene Regulation With Tumor Progression (472) D Campagna, L Cope, CA Iacobuzio-Donahue - The Johns Hopkins Hospital, Baltimore, MD