POSTER SESSION I Monday, February 28, 2005   —  9:30 AM - 12:00 Noon Convention Center, Exhibit Hall B GASTROINTESTINAL PATHOLOGY 60 Genetic Interactions and Histologic Associations of NOD2, DLG5, OCTN1 and OCTN2 Polymorphisms in Ileal Crohn's Disease (431) DW Abbott, RD Odze, LC Cantley, M Redston - Brigham and Women's Hospital, Boston, MA; Harvard Medical School, Boston, MA 61 Role of Leukocyte ß2 Integrens in Pathophysiology of Colitis (432) M Abdelbaqi, J Chidlow, K Mathews, M Fowler, CG Kevil - LSU Health Science Center, Shreveport, LA 62 CDX2 Expression in Intestinal Metaplasia, Dysplasia, and Carcinoma of the Gallbladder: An Immunohistochemical Study (457) SW Davis, MR Carter - Wilford Hall Medical Center, San Antonio, TX 63 Immunostaining for AMACR Is Useful in Distinguishing Reactive from Dysplastic Epithelium in Barrett's Esophagus and Inflammatory Bowel Disease (463) RK Dorer, JN Glickman, PL Blount, K Ayub, B Reid, RD Odze - Brigham and Women's Hospital, Boston, MA; Fred Hutchinson Cancer Research Center, Seattle, WA 64 Epidermal Growth Factor Receptor (EGFR) in Primary and Metastatic Colorectal Carcinoma (476) M Gupta, V Varma, G Costonis, D Lawson, C Cohen - Emory University School of Medicine, Atlanta, GA; Veteran Affairs Medical Center, Decatur, GA; Emory University School of Public Health, Atlanta, GA 65 Vessels' Morphology of Polyps Distinguish SMAD4 and BMPR1A-Related Digestive Juvenile Polyposis Syndrome (477) A Handra-Luca, C Condroyer, C Boisson, M Tepper, JF Flejou, S Olschwang AP-HP - Hôspital Jean Verdier, Bondy, France; Paris; Hôspital Saint Antoine, Paris 66 Pathology of the Ileum in Chronic Ulcerative Colitis (480) H Haskell, CW Andrews, Jr., S Reddy, K Dendrinos, FA Farraye, A Stucchi, JM Becker, RD Odze - Brigham and Women's Hospital; Boston Medical Center, Boston, MA 67 Detection of Ganglion Cells by RET Oncoprotein in Hirschsprung Disease in Colonic Biopsies and Resections (490) S Karim, CM Hession, S Marconi, DL Gang, CN Otis - Baystate Medical Center/Tufts University School of Medicine, Springfield, MA 68 CpG Island Methylation in Carcinoid Tumors and Pancreatic Endocrine Tumors (502) L Liu, J Yao, H Wang, J White, T-T Wu, S Hamilton, A Rashid - The University of Texas M. D. Anderson Cancer Center, Houston 69 Basal Crypt Dysplasia-Like Atypia with Surface Maturation in Barrett's Esophagus: Evidence That It Represents True Neoplasia (506) L Lomo, PL Blount, CA Sanchez, DS Cowan, K Ayub, BJ Reid, RD Odze - Brigham and Women's Hospital, Boston, MA; Fred Hutchinson Cancer Center, Seattle, WA 70 Morphology and Clinical Outcome of Residual Esophageal Carcinoma Following Neoadjuvant Therapy (515) T Neto, M Robert, R Salem, B Burtness, R Wu, D Jain - Yale University School of Medicine, New Haven, CT 71 Esophageal and Gastric Carcinoma - Incidence Trends in Ontario, Canada (522) JR Parfitt, Z Miladinovic, DK Driman - London Health Sciences Centre and University of Western Ontario, London, ON, Canada; University of Western Ontario, London, ON, Canada 72 Expression of Tumor Suppressor 14-3-3 s Protein in Anal Squamous Intraepithelial Neoplasia (532) AA Roma, JR Goldblum, B Yang - Cleveland Clinic Foundation, Cleveland, OH 73 Maintenance Infliximab Treatment and Resolution of Histopathologic Abnormalities in Colonic Crohn's Disease (534) JJ Rowe, RA Komorowski, VO Osipov, JA Parisi, VB Shidham, DG Binion - Medical College of Wisconsin, Milwaukee, WI 74 RASSF1A Expression and Gene Methylation in Ileal Carcinoid Tumors (536) KM Rumilla, H Zhang, LA Erickson, TJ Hobday, J Rubin, C Erlichman, MM Ames, RV Lloyd - Mayo Clinic, Rochester, MN 75 Epidermal Growth Factor Receptor Expression in Colorectal Carcinoma - A Tissue Microarray-Based Study (544) WM Smith, A Lehman, WL Frankel - Ohio State University, Columbus, OH 76 Extent of Low Grade Dysplasia Is a Significant Risk Factor for Cancer in Barrett's Esophagus (546) A Srivastava, JL Hornick, PL Blount, X Li, CA Sanchez, DS Cowan, K Ayub, CC Maley, BJ Reid, RD Odze - Brigham and Women's Hospital, Boston, MA; Fred Hutchinson Cancer Research Center, Seattle, WA 77 Epidermal Growth Factor Receptor (EGFR) Expression in Colorectal Cancer and Clinical Outcome of Anti-EGFR Therapy (558) EX Wei, F Abreo, ML Nordberg - Louisiana State University, Shreveport, LA; Louisiana State University, Shreveport, LA 78 Minimal Collagenous Colitis: Microscopic Colitis with Minimal Subsurface Collagen Is Appropriately Diagnosed as Collagenous Colitis (561) W Xin, LT Evans, HD Appelman, MA Anderson, BJ McKenna - University of Michigan, Ann Arbor, MI 79 DNA Methylation Profiling of Anal Intraepithelial Lesions and Anal Squamous Cell Carcinoma (566) J Zhang, ZB Fansler, EA Kincaid, C Martins, DP Clark - The Johns Hopkins Medical Institutions, Baltimore, MD