POSTER SESSION II Monday, March 8, 2004   —  1:00 - 4:30 PM Exhibit Hall B and C GASTROINTESTINAL PATHOLOGY 49 Frequency of EWS-ATF1 Fusion Transcripts in Gastrointestional Tumors Diagnosed as Malignant Melanoma (465) M Covinsky, S Gong, V Rajaram, A Perry, J Pfeifer - Washington University School of Medicine, St. Louis, MO 50 Interobserver Variability in Grading of Anal Intraepithelial Neoplasia Is Reduced by MIB-1 Immunostaining (481) MM Haber, M Sharma, ME Leon, DA Nagle, FU Garcia - Drexel University College of Medicine, Philadelphia, PA 51 Morphological Characterization of the Squamo-Columnar Junction (Z-Line) in Fetal Autopsy Specimens (451) R Adame Cabrera, L Ayala, C Rodrigues, M Crespo, P Borralho, A Dias Pereira, P Chaves, J Soares - Instituto Portugues de Oncologia de Francisco Gentil CROL SA, Lisbon, Portugal; Hospital Garcia de Orta SA, Almada, Portugal 52 The Presence of Helicobacter pylori in Gastroesophageal Junction Biopsies (514) EY Memari, YL Liu, JF Silverman - Allegheny General Hospital, Pittsburgh, PA 53 Claudin Gene Overexpression in Esophageal Adenocarcinoma and Its Precursors (518) E Montgomery, S Zhang, A Mamelak, A Maitra, S Sheikh, S Amr, S Yang, M Brock, A Forastiere, K Berg - Johns Hopkins University, Baltimore, MD; Dhahran Health Center, Dhahran, Saudi Arabia 54 Expression of the Intestinal Marker CDX2 in the Columnar-Lined Esophagus (480) GM Groisman, A Meir - Hillel Yaffe Medical Center, Hadera, Israel 55 Over-Expression of Decoy Receptor 3 in Precancerous Lesions and Adenocarcinoma of the Esophagus (502) H Li, L Zhang, I Ding, J Huang, PA diSant'Agnese, H Lou, JY Lei - University of Rochester Medical Center, Rochester, NY; Zhengzhou University Medical School, Zhengzhou, Henan, China; National Institutes of Health, Bethesda, MD 56 Over-Expression of Human Carcinoma-Associated Antigen in Precancerous Lesions and Adenocarcinoma of the Esophagus (503) S Liang, J Huang, PA Bourne, PA diSant'Agnese, J Yao, JY Lei - University of Rochester Medical Center, Rochester, NY 57 Loss of Heterozygosity Analysis Demonstrates Monoclonal Evolution with Frequent Genetic Progression and Divergence in Esophageal Carcinosarcoma (512) T Matsumoto, H Fujii, A Arakawa, S Yamasaki, H Sonoue, M Tsurumaru - Juntendo University, School of Medicine, Tokyo, Japan 58 Prognostic Value of Histologic Grading for Esophageal Squamous Cell Carcinoma: A Clinicopathologic Study (545) Y Taniyama, Y Mikami, H Sasano, S Miyazaki, S Satomi - Tohoku University, Sendai, Miyagi, Japan 59 In-Situ Assessment of Telomere Length in Gastric Adenocarcinoma and Gastric Intestinal Metaplasia (459) B Bhattacharya, HP Dilworth, B Bhagavan, AK Meeker, JH Yardley, E Montgomery - The Johns Hopkins Hospital, Baltimore, MD 60 Frequent CpG Island Methylation in Sporadic and Syndromic Gastric Fundic Gland Polyps (450) SC Abraham, SJ Park, M Cruz-Correa, PS Houlihan, PM Lynch, TT Wu - Mayo Clinic, Rochester, MN; MD Anderson Cancer Center, Houston, TX; Cleveland Clinic Florida, Weston, FL 61 Stump Gastric Cancers Have Different EBV Status and Mucin Phenotype from Conventional Cancers but No Distinct MSI Status (515) M Mino, DE Eatherton, GY Lauwers - Massachusetts General Hospital, Boston, MA 62 Epstein-Barr Virus in Chronic Gastritis Lesions (536) J Shen, LB Thorne, J Ryan, S Elmore, SC Kenney, ML Gulley - Univ. of North Carolina, Chapel Hill, NC 63 Reduced CD1d Expression in Colonic Mucosal Epithelium in Microscopic Colitis (477) Y Ge, BA Rampy, S-Y Xiao - University of Texas Medical Branch, Galveston, TX 64 Immunohistochemical Comparison between Lymphocytic Subsets in Lymphocytic Gastritis and Lymphocytic Colitis (525) T Oweity, AB West, S Ibrahim - New York University Medical Center, NY, NY 65 Lymphocytic Gastritis: A Benign T-Monoclonal Intra-Epithelial Disease? Histological, Immunohistological and Molecular Study of 84 Cases (469) A de Mascarel, S Stanislas, JF Goussot, G Belleannee, JP Merlio - CHU, Bordeaux, France 66 The Clinical Significance of Focally Enhanced Gastritis (552) W Xin, JK Greenson - University of Michigan Health System, Ann Arbor, MI 67 Gastric Glandular Siderosis: A Possible Sign of Undiagnosed Hemochromatosis (510) EC Marginean, M Bennick, M Robert, D Jain - Yale School of Medicine, New Haven, CT 68 Expression of Mucins, MUC1, MUC5AC, MUC6 and MUC2 in Reactive Gastropathy (498) GY Lauwers S Tomita, M Mino - Massachusetts General Hospital, Boston, MA; Dokkyo University School of Medicine, Tochigi, Japan 69 Chemical Gastropathy in Patients with Barrett Esophagus: Further Evidence of a Pathogenetic Role for Alkaline Reflux (548) ER Tschanz, RM Genta - Geneva University Hospital, Geneva, Switzerland