ECP 2022 Final Programme

Poster Sessions a Monday 91 ECP 2022 Basel Monday, 5 Sept PS-07 040 Inter-observer concordance in the measurement of histological risk factors in pT1 colorectal adenocarcinomas Karmele Saez De Gordoa, Spain I. Archilla, M. Rodrigo-Calvo, J. Aguirre, M. Camara Jurado, A. Canosa, F. Giner, M. Jimeno, I. Jurado, S. Landolfi, A. Lloret, I. Machado, C. Martínez-Ciarpaglini, E. Musulen, D. Naranjo, N. Papaleo, Ò. Rosiñol, R. Sanchez Yuste, G. Vázquez Benítez, M. Cuatrecasas 041 Diagnostic utility of CK20, SATB2, CDH17, and Villin for the identification of gastrointestinal tumour origin: a tissue microarray study on 7711 tumours of 117 tumour entities Frank Jacobsen, Germany D. Dum, P. Lebok, M. Lennartz, S. Weidemann, E. Burandt, C. Fraune, R. Simon, T. Krech, F. Büscheck, T. Clauditz, X. Duan 043 Nonconventional dysplasia in inflamma- tory bowel disease associated colorectal adenocarcinoma: a clinicopathologic study of twenty-four cases Angel Panizo, Spain T. Dot Gómara, S. Rázquin Lizarraga, T. Labiano Miravalles, G. Aísa Rivera, M. Llanos Chavarri, M. Bronte Anaut, I. Sánchez Sánchez, E. Sierra Arellano, R. Unciti Ruiz 044 Clinicopathological study of retroperito- neal margin invasion in right radical hemicolectomy with colon cancer Manuel Francisco Molina-Centelles, Spain P. Guerrero Antolino, M. Frasson, I. Rienda Martínez, N. Rausell Fontestad, C. Zac Romero, D. Ramos Soler, E. García-Granero Ximénez, F. Giner Segura 045 Hemorrhoidectomy specimens: incidental malignant lesions. An eight-year retrospective study with eleven case reports Geanella Geraldinne Yange Zambrano, Spain G. Moreno De Juan, J. Yange-Zambrano, I. Gallego Gutiérrez, N. González-Ortega, M. Del-Barrio-Molina, M. Novell-Grau 046 Prognostic value of Decorin expression at the invasive front of colorectal adenocar- cinomas Dina Tiniakos, Greece/UK D. Bouklas, A. Kostopoulou, A. Lazaris, N. Kavantzas, A. Gklavas, E. Kapeni, D. Karandrea, G. Thomopoulou 047 Simulated digital gastric cancer endo- scopic biopsies and surgical resections stained with PD-L1 IHC 22C3 pharmDx present similar PD-L1 expression when scored using combined positive score Emily Olander, USA D. Monaco, J. Quiroz, K. Kulangara, S. Hund, L. Peltz, E. Manna, S. Tabuena-Frolli 048 Impact of the Covid-19 crisis on digestive cancers operated on in a Tunisian hospital center Sirine Elfekih, Tunisia M. Ben Thayer, F. Khanchel, I. Helal, R. Hedhli, E. Ben Brahim, R. Jouini, A. Chadli 049 Prognostic relevance of tumour budding and poorly differentiated clusters in gastric adenocarcinoma Éva Kocsmár, Hungary L. Szalai, Á. Jakab, I. Kocsmár, I. Szirtes, A. Szijártó, Z. Schaff, A. Kiss, G. Lotz 050 Microsatellite instability status and tumour regression grading on gastric and gastroesophageal junction adenocarci- noma – the first portrait of a Portuguese reality Rafael Moiteiro Da Cruz, Portugal V. Lobo, C. Melo-Alvim, R. Luís 051 Duodenal adenoma in familial adenoma- tous polyposis (FAP), a case series Marta Miralles, Spain C. Fumagalli, T. Vázquez del Olmo, A. Gallardo Alcañiz, M. Campos Mármol, A. Prat Cantoral, D. Piñol Ballús, J. Szafranska