ESTRO 2021 Abstract Book

S306

ESTRO 2021

Conclusion These results suggest that a negative PMI is not related to a higher pain score but rather to an inadequate pain management by physicians. Radiation Oncologists attitude, when prescribing analgesics, was negatively influenced by more favorable pts characteristics. Educational strategies seem necessary in RT Depts to reduce the non-negligible percentage (30.4%) of patients with pain who receive inadequate drug therapy.

Proffered papers: Proffered papers 25: Upper GI

OC-0411 The prognostic value of tumor markers in patients with resectable gastric cancer A. Slagter 1 , M. Vollebergh 2 , I. Caspers 3,4 , J. van Sandick 5 , K. Sikorska 6 , P. Lind 7,8 , M. Nordsmark 9 , H. Putter 10 , J. Braak 11 , E. Meershoek-Klein Kranenbarg 11 , C. van de Velde 12 , E. Jansen 1 , A. Cats 3 , H. van Laarhoven 13 , N. van Grieken 4 , M. Verheij 1,14 1 Netherlands Cancer Institute, Radiation Oncology, Amsterdam, The Netherlands; 2 Netherlands Cancer Institute, Medical Oncology, Amsterdam, The Netherlands; 3 Netherlands Cancer Institute, Gastrointestinal Oncology, Amsterdam, The Netherlands; 4 Amsterdam University Medical Centers, Pathology, Amsterdam, The Netherlands; 5 Netherlands Cancer Institute, Surgery, Amsterdam, The Netherlands; 6 Netherlands Cancer Institute, Biometrics, Amsterdam, The Netherlands; 7 Stockholm Söder Hospital, Oncology, Stockholm, Sweden; 8 Karolinska Institutet, Oncology, Stockholm, Sweden; 9 Aarhus University, Medical Oncology, Aarhus, Denmark; 10 Leiden University Medical Center, Biometrics, Leiden, The Netherlands; 11 Leiden University