POSTER SESSION III Tuesday, February 14, 2006   —  9:30 AM - 12:00 Noon Exhibit Level GASTROINTESTINAL PATHOLOGY 53 Partial Acinar Cell Differentiation of Type-I Gastric Carcinoid Tumors Induced by Achlorhydria Secondary to Hypergastrinemia (550) LH Tang, JR Shia, L Song, D Dhall, DS Klimstra Memorial Sloan-Kettering Cancer Center, New York, NY 54 Identification of Histidine Decarboxylase (HDC) Positive Endocrine Cells in Subtypes of Gastric Carcinoid Tumors Using Highly Sensitive and Specific Chromogen In Situ Hybridization (CISH) (552) LH Tang, L Song, JR Shia, DS Klimstra - Memorial Sloan-Kettering Cancer Center, New York, NY 55 Duodenal Bulb Carcinoids: Association With H Pylori Gastritis And Long-Term Treatment With Proton Pump Inhibitors (555) T VanderJagt, MB Amin, N Goldstein, S Lathrop, SH Merchant - Univ of New Mexico, Albuquerque, NM; William Beaumont Hospital, Royal Oak, MI 56 Sporadic Duodenal Gastrinomas: Clinicopathologic Profile Of 18 Recently Diagnosed Cases (556) T VanderJagt, SH Merchant, N Golstein, S Lathrop, MB Amin - University of New Mexico, Albuquerque, NM; William Beaumont Hospital, Royal Oak, MI 57 Goblet Cell Tumors Of The Appendix: An Immunohistochemical And Outcome Analysis Of 63 cases (545) A Srivastava, J Misdraji, GY Lauwers, F Graeme-Cook, RD Odze - Brigham & Women's Hospital, Massachusetts General Hospital, Boston, MA 58 Low-Grade Appendiceal Neoplasms: Mutational And Allelotypic Analysis (503) AM Krasinskas, L Wang, J Murphy, GS Mantha, JL Hunt - University of Pittsburgh Medical Center, Pittsburgh, PA 59 Strong PDGFRA Positivity Is Seen in GISTs But Not in Other Intraabdominal Mesenchymal Tumors: Immunohistochemical and Mutational Analyses (529) MR Peterson, Z Piao, N Weidner, JE Yi University of California, San Diego, CA 60 Morphologic & Immunohistochemical (IM) Changes of Gastrointestinal Stromal Tumors (GIST) After Gleevec Treatment: A Study of 16 Cases (501) MJ Kim, SJ Jang, E Yu, YG Kang, JY Ro - Asan Medical Center, Seoul, Korea; Asan Medical Center, Seoul, Korea; The Methodist Hospital, Houston, TX 61 Are Colonic Mucosal Eosinophils Affected by Seasonal Influences? (483) ER Duncanson, BF Banner, RK Yantiss - Weill Medical College of Cornell University, New York, NY; UMass Memorial Health Care, Worcester, MA 62 Differential Expression of HLA-G in Crohn's Disease and Ulcerative Colitis (564) R Wilcox, B Yilmaz, C Gong, M Tretiakova, D Huo, J Cho, A Noffsinger, J Hart - University of Chicago, Chicago, IL 63 Unexpected Morphologic Changes Of Crohn's Disease In Asymptomatic Patients Undergoing Routine Screening Colonoscopy (540) J Scudiere, S Jakate, D Cimbaluk, A Keshavarzian - Rush Univ, Chicago, IL 64 Hyperplastic/Serrated Polyposis in Inflammatory Bowel Disease: A Case Series of a Previously Undescribed Entity (544) A Srivastava, M Redston, RD Odze Brigham and Women's Hospital, Boston, MA 65 Pathological Correlates Of Microsatellite Instability In IBD-Associated Colorectal Carcinomas (497) C Johnson, GS Levi, K Schulmann, SJ Meltzer, N Harpaz - The Mount Sinai School of Medicine, New York, NY; Ruhr University, Knappschaftskrankenhaus, Bochum, Germany; University of Maryland School of Medicine, Baltimore, MD 66 Utility of p53 and ²-Catenin Staining in Separating Dysplasia-Associated Lesion/Mass [DALM] From Sporadic Adenoma [SA] in Colitis Patients (488) H Fenton, M Lewin, H Dilworth, T Sheridan, A Burkart, R Anders, E Montgomery - Johns Hopkins Hospital 67 Diagnostic Accuracy in Ulcerative Colitis Neoplasia (468) MP Bronner, E Walker, L Burgart, JR Goldblum, JK Greenson, M Haber, J Hart, G Lauwers, A Lazenby, D Lewin, M Robert, K Washington, E Montgomery - Cleveland Clinic; Mayo Clinic; U MI; MCP Hahnemann; U Chicago; Harvard MGH; U AL; MUSC; Yale; Vanderbilt; Johns Hopkins 68 Intraepithelial Lymphocytosis with Normal Villous Architecture in Proximal Small Bowel of Morbidly Obese Patients (572) A Yurovitsky, N Harpaz, M Lewis, S Kini, GS Levi - Mount Sinai Medical Center, New York, NY 69 The Majority Of Intraepithelial T Cells In Celiac Disease Are CD5 Negative: An Extensive Immunohistochemical Analysis (536) RL Rucker-Schmidt, GS Pinkus, JL Pinkus, JL Hornick - Brigham and Women's Hospital, Boston, MA 70 Characterization of T Cells in Colorectal Carcinomas (562) C Weber, L Yerian, W Liu, M Tretiakova, C Gong, C McBride, YX Fu, A Noffsinger, J Hart - University of Chicago, Chicago, IL; Cleveland Clinic, Cleveland, OH; Rosalind Franklin University of Medicine and Science, North Chicago, IL 71 A Quantitative Study Of The Lymphocytic Response In Esophageal Biopsies: Gastroesophageal Reflux Disease Versus Eosinophilic Esophagitis (563) DC Welch, DB Polk, F Revetta, MK Washington - Vanderbilt Medical Center, Nashville, TN 72 Prevalence-Driven Comparative Histological Analysis Of Recent And Archival Esophageal Biopsies For Eosinophilic And Reflux Esophagitis (479) D Cimbaluk, J Scudiere, R John, S Jakate - Rush University Medical Center, Chicago, IL 73 Are All Esophageal Diverticula Secondary To An Underlying Esophageal Motility Disorder (EMD)? The Utility Of Esophageal Muscle Biopsy In The Evaluation Of Patients With Esophageal Diverticula (570) MM Yearsley, TW Rice, S Resnik, S Shay, JR Goldblum - The Cleveland Clinic, Cleveland, OH 74 Improved Diagnosis of Corpus Gastric Atrophy: A Comparison with SERA PGI/PGII Ratio (485) H El-Zimaity, D Graham, A Campos, L Guerrero, A Chavez, V Cardenas - Baylor College of Medicine, Houston, TX; UT School of Public Health, El Paso, TX 75 How Many Plasma Cells are Too Many for Gastric Antrum in Children? (548) M Suchi - The Children's Hospital of Philadelphia, Philadelphia, PA; Currently Children's Hospital of Wisconsin, Milwaukee, WI 76 Helicobacter Heilmannii Gastritis: Need For Reappraisal, Collaboration And Guidelines (493) S Jakate, D Cimbaluk, J Dinh, J Scudiere - Rush University Medical Center, Chicago, IL