ECP 2022 Final Programme

Poster Sessions a Monday 89 ECP 2022 Basel Monday, 5 Sept PS-07 013 Evaluating PTEN expression using immunohistochemistry in neuroendocrine tumours of the digestive tract and correlations with tumour grade and location – a seven-year retrospective study Andrei Dorel Plopeanu, Romania A. Dema, O. Popa, A. Pascu, R. Barna, B. Nataras, S. Taban 014 Association between Immunoscore and budding in colorectal carcinoma Imen Helal, Tunisia K. Ben Lazreg, F. Khanchel, M. Ben Thayer, R. Hedhli, E. Ben Brahim, R. Jouini, A. Chadli 015 Correlation between endoscopic appear- ance and histology in immune checkpoint inhibitors-induced gastritis Irena Ungureanu, France P. Bonnet, C. Julié, D. Parlier, P. Saiag, D. Lamarque, J. Emile, F. Elisa 016 Diagnostic usefulness of p53 immunos- taining in gastric cancer and dysplasia: a real-world clinical experience Moonsik Kim, Republic of Korea 017 Tumour area infiltration and absolute tumour cell counts in endoscopic biopsies of therapy-naive upper GI tract carcino- mas – implications for predictive biomarker testing Alexander Quaas, Germany H. Lamberty, A. Scheel, Y. Tolkach, F. Gebauer, B. Schoemig-Markiefka, T. Zander, R. Büttner, J. Rueschoff, C. Bruns, W. Schroeder 018 Immune microenvironment landscape shows treatment specific differences in rectal cancer patients Cristina Graham Martínez, The Netherlands Y. Barella, S. Kus Oztürk, M. Gorris, S. van Lent-van Vliet, C. Marijnen, I. Nagtegaal 019 H3K27me3 immunohistochemical loss predicts response to neo-adjuvant chemo-radiotherapy (CRT) in patients with locally advanced rectal adenocarci- noma Nicolo’ Caldonazzi, Italy P. Rizzo, S. Ammendola, G. Turri, C. Pedrazzani, A. Scarpa, V. Barresi 020 NET G3 of the digestive system: clini- co-pathological and molecular features of 7 cases Lorenzo Casiccia, Italy R. Maragliano, M. Testa, F. Sessa, S. La Rosa, S. Uccella 021 PINK1 analysis in colorectal adenocarci- noma and their respective hepatic metastasis with clinical relevancy Juan Carlos Celis Pinto, Spain D. Corte-Torres, A. Vallina, A. Alonso Fernández-Velasco, I. Fernandez Vega 023 The usefullness of Cycline D1 in diagnos- tics of naive, CD117/DOG1 positive gastrointestinal stromal tumours (GISTs) – correlation with other histological and immunohistochemical factors Malgorzata Lenarcik, Poland M. Polkowski, P. Wieszczy, A. Mróz 024 Granulomatous appendicitis: a diagnostic challenge. Clinicopathological retrospec- tive study of 60 cases Alejandro Pasco Peña, Spain A. Larrea, G. Aísa Rivera, M. Cevallos, M. Mercado, Á. Panizo 025 Impact of IL-17-positive lymphocytes and -197A/G SNP in development of gastric cancer Elina Aleksandrova, Bulgaria J. Ananiev, K. Ivanova, M. Hadzhi, M. Galabova