POSTER SESSION II Monday, February 28, 2005   —  1:00 - 4:30 PM Convention Center, Exhibit Hall B GASTROINTESTINAL PATHOLOGY 36 Morphological Parameters Are Useful in Distinguishing Barrett's Esophagus from Carditis with Intestinal Metaplasia (545) A Srivastava, JN Glickman, RD Odze - Brigham and Women's Hospital, Boston, MA 37 Growth Regulation and Apoptosis in Columnar Epithelium underneath Re-Epithelialized Islands of Squamous Mucosa in Barrett's Esophagus (483) JL Hornick, PL Blount, CA Sanchez, DS Cowan, K Ayub, CC Maley, BJ Reid, RD Odze - Brigham and Women's Hospital, Harvard Medical School, Boston, MA; Fred Hutchinson Cancer Research Center, Seattle, WA 38 Multilayered Epithelium at the Squamocolumnar Junction Is a Histological Marker for Gastroesophageal Reflux Disease (470) JN Glickman, SJ Spechler, T Dineen, E Lee, RD Odze - Brigham and Women's Hospital, Boston, MA; Dallas Veterans Affairs Medical Center, Dallas, TX 39 Overexpression of Claudin 4 Is a Marker of Columnar Metaplasia in Gastroesophageal Reflux Disease (471) JN Glickman, SJ Spechler, T Dineen, E Lee, RD Odze - Brigham and Women's Hospital, Boston, MA; Dallas Veteran's Affairs Medical Center, Dallas, TX 40 Detection of Helicobacter Pylori by Multiplex PCR: Comparison with Immunohistochemistry and CLOtest (557) WG Watkin, H Zhang, X Meng, E Kilner, JR Weiss, T Tsang - Evanston Northwestern Healthcare, Evanston, IL 41 Occult Helicobacter pylori Infection Detected by PCR in Biopsies with Chronic Gastritis (568) V Zsikla, M Baumann, N Schaub, R Meier, G Cathomas - Cantonal Institute of Pathology, Liestal, Switzerland; Hospital, Liestal, Switzerland; Hospital, Bruderholz, Switzerland 42 Role of Serologic Markers in Diagnosis of Inflammatory Bowel Disease (468) V Gasilionis, GP Paner, SE Kahn, R Hammadeh, EW Holmes - Loyola University Medical center, Maywood, IL 43 Alterations of Mucosal Cell Populations in the Pathogenesis of Irritable Pouch Syndrome (503) WW Liu, B Shen - Case Western Reserve University, Cleveland, OH; The Cleveland Clinic Foundation, Cleveland, OH 44 Muscularis Mucosae Reduplication ("Ski Track Sign") Favors Ulcerative Colitis in the Differential Diagnosis of IBD (541) D Shukla, M Bu-Ghanim, N Harpaz - The Mount Sinai School of Medicine, New York, NY 45 Increased CD68 Positive Macrophages and Macrophage Microaggregates Are Prevalent in Crohn's Colitis and Aid in Its Distinction from Ulcerative Colitis (565) RK Yantiss, T Yang, SP Baker, HH Wang, FA Farraye, RD Odze - UMass Memorial Health Care, Worcester, MA; Brigham & Women's Hospital, Boston, MA; UMass Medical School, Worcester, MA; Beth Israel Deaconess Medical Center, Boston, MA; Boston University Medical Center, Boston, MA 46 Contemporary Morphologic Features of Ileal Crohn's Disease and Definition of Backwash Ileitis Using Archival and Current Colectomy and Biopsy Specimens (464) M Dulai, NS Goldstein - William Beaumont Hospital, Royal Oak, MI 47 Molecular Detection of Campylobacter jejuni in Archival Cases of Acute Appendicitis (447) LK Campbell, JM Havens, MA Scott, LW Lamps - Univ. of Arkansas for Medical Sciences, Little Rock, AR; Central Arkansas Veterans Healthcare System, Little Rock, AR 48 Yersinia DNA from Gene That Modulates Macrophage Response Is Detected in Intestines of Crohn's Disease Patients (481) JM Havens, MA Scott, NS Goldstein, JK Greenson, MP Bronner, LW Lamps - UAMS, Little Rock, AR; Central Arkansas Veterans Healthcare System, Little Rock, AR; William Beaumont Hospital, Royal Oak, MI; Univ. Michigan, Ann Arbor, MI; Cleveland Clinic Foundation, Cleveland, OH 49 Detection of Apoptosis in Colorectal Tissues Using M30 Immunohistochemistry (439) S Badvie, A Hanna-Morris, S Saini, HJ Andreyev, TG Allen-Mersh, P Cohen - Chelsea & Westminster Hospital, Imperial College London, United Kingdom; Charing Cross Hospital, Imperial College London, United Kingdom 50 Is Telomere Length Shortening a Predictive Biomarker for Cancer Risk in Ulcerative Colitis? (518) J O'Sullivan, C O'Riain, J Gorman, D Keegan, H Mulcahy, J Hyland, D Fennelly, K Sheahan, D O'Donoghue - St Vincent's University Hospital, Elm Park, Dublin, Ireland 51 Overexpression of the High Mobility Group Proteins HMGI(Y) in Dysplasia Arising in Ulcerative Colitis (446) A Burch, M Rahmani, M Younes - Baylor College of Medicine, Houston, TX 52 Immunohistochemical Expression of hMLH1, hMSH2, and Ki-67 in Serrated and Neoplastic Lesions in Patients with Inflammatory Bowel Disease (486) JY Hutto, A Khramtsov, M Tretiakova, A Noffsinger - University of Chicago, Chicago, IL 53 Aberrant Expression of Maspin in Idiopathic Inflammatory Bowel Disease Is Associated with Disease Activity and Neoplastic Transformation (507) A Maitra, D Cao, R Wilentz, C Neumann, JL Abbruzzese, L Ho - The Johns Hopkins Hospital, Baltimore, MD; UT MD Anderson Cancer Center, Houston, TX 54 Enterocolic Lymphocytic Phlebitis in Patients with Collagenous and Lymphocytic Colitis (500) JT Lewis, DW Visscher, AM Krasinskas, SC Abraham - Mayo Clinic, Rochester, MN; University of Pittsburgh, Pittsburgh, PA 55 Seasonal Pattern of Onset in Lymphocytic Colitis (497) PR LaSala, AB Chodosh, JA Vecchio, H Blaszyk - UTMB, Galveston, TX; UVM, Burlington, VT; UVM, Burlington, VT 56 Normal Variation in Intraepithelial Lymphocytes of the Terminal Ileum (487) S Istvanic, RK Yantiss, SP Baker, BF Banner - UMass Memorial Health Care, Worcester, MA; UMass Medical School, Worcester, MA 57 Prediction of Celiac Disease with Transglutaminase Autoantibodies Measured by Radioassay Versus Elisa Assay (443) F Bao, E Liu, EJ Hoffenberg, GS Eisenbarth - Louisiana State University Health Sciences Center, Shreveport, LA; University of Colorado Health Sciences Center, Denver, CO 58 Microvillus Inclusion Disease: Morphology, Organ Involvement, Biomarkers and Ultrastructure (563) G-Y Yang, HP Dilworth, M Haas, E Montgomery, B Bhagavan - Johns Hopkins Hospital, Baltimore, MD 59 Duodenal Biopsies with Increased Intra-Epithelial Lymphocytes in the Absence of Villous Blunting (462) HP Dilworth, GY Yang, J Yardley, E Montgomery - Johns Hopkins Hospital, Baltimore, MD 60 Differential Expression of a-Methylacyl Coenzyme A Racemase in Adenocarcinomas of the Small and Large Intestines (450) ZE Chen, P Amargo, HL Wang - Washington University School of Medicine, St. Louis, MO 61 Defective Mismatch Repair Proteins in Adenomas and Adenocarcinomas of the Small Bowel: An Immunohistochemical Analysis (550) DL Toweill, PE Swanson, MP Upton, MM Yeh - University of Washington School of Medicine, Seattle, WA