POSTER SESSION I STOWELL-ORBISON/AUTOPSY and SURGICAL PATHOLOGY AWARDS COMPETITION Monday, February 28, 2011   —  9:30 AM - 12:00 Noon Exhibit Hall Click on the blue numbers in parentheses to display abstracts. Click the button next to any title to add to Itinerary Planner... GASTROINTESTINAL PATHOLOGY Poster# Title and Authors Itinerary Planner 85 Pattern of Calretinin Staining in Hirschsprung Disease; Comparison of Aganglionic Segment to the Transition Zone and Ganglionic Colon. (639) M Hosseini, AN Husain - University of Chicago, IL Add 86 Histological Outcome after Treatment in Collagenous Colitis: A Long Term Follow-Up Study of 50 Patients. (633) CE Hagen, RM Najarian, H Wang, JS Levine, CA Siegel, C Levy, R Burakoff, RD Odze, A Srivastava - Dartmouth Hitchcock Medical Center, Lebanon; Beth Israel Deaconess Medical Center, Boston; Brigham and Women's Hospital, Boston Add 87 Clinicopathologic and Genetic Characterization of Traditional Serrated Polyps of the Colon. (622) B Fu, S Yachida, R Morgan, Y Zhong, EA Montgomery, CA Iacobuzio-Donahue - The Johns Hopkins Hospital, Baltimore, MD Add 88 Desert Hedgehog (DHH) and Sonic Hedgehog (SHH) Overexpression in Colorectal Cancer (CRC): Correlation with AJCC Stage and Overall Survival. (621) E Flynn, K Robstad, MA Ashraf, CE Sheehan, DM Jones, JS Ross - Albany Medical College, NY Add 89 Discordance between Molecular and Immunohistochemical Analyses for Lynch Syndrome Assessment. (602) AN Bartley, R Luthra, D Saraiya, RR Broaddus - The University of Texas MD Anderson Cancer Center, Houston Add 90 Geographic Distribution of Eosinophilic Esophagitis in the United States: An Analysis of 6,724 Unique Patients. (642) JM Hurrell, RM Genta - Caris Life Sciences, Irving, TX; UTSW and Dallas VAMC, TX Add 91 Role of Reflux on Eosinophilic Esophagitis: Analysis on Morphologic Feature, Classification and Clinical Correlation with Large Cohort of 273 Patients. (614) P Dhakras, D Patil, S Rao, N Gonsalves, I Hirano, G-Y Yang - Northwestern University, Chicago, IL Add 92 TTF-1 and Napsin-A Frequently Positive in Esophageal and Pulmonary Adenocarcinomas: Dispelling Myths and Offering New Insights. (596) KS Aulakh, C Chisholm, VO Speights - Texas A&M Health Science Center . Scott & White Hospital, Temple Add 93 Characterization of HER2 Expression in Primary Gastroesophageal Adenocarcinomas. (646) JA Jeung, R Patel, L Vila, D Wakefield, C Liu - University of Florida, Gainesville Add 94 Prognosis of Minimally Invasive Adenocarcinoma Arising in Mucinous Cystic Neoplasms of the Pancreas. (658) GH Lewis, H Wang, W Fisher, R Schulick, C Wolfgang, JL Cameron, RH Hruban - The Johns Hopkins Medical Institutions, Baltimore, MD; The University of Texas M.D. Anderson Cancer Center, Houston; Baylor College of Medicine, Houston, TX Add