ESTRO 2025 - Abstract Book

S1780

Clinical – Upper GI

ESTRO 2025

Conclusion: SMART re-irradiation is a feasible non-invasive local treatment option for liver metastases, achieving excellent in-field LC with low toxicity, even in a heavily pre-treated population. Intrahepatic out-of-field and distant relapse were main failure patterns highlighting the need for improved systemic therapy in repeat/induced oligometastatic cohort.

Keywords: Liver Metastasis, Reirradiation, SMART.

References: 1. Scorsetti M, Clerici E, Comito T. J Gastrointest Oncol. 2014 Jun;5(3):190-7 2. Henke L. Radiother Oncol. 2018 Mar;126(3):519-526 3. Witt JS, Rosenberg SA, Bassetti MF. Lancet Oncol (2020) 21: e74–82

4.Nicolaus Andratschke et al. Lancet Oncol 2022; 23: e469–78 5. Matthias Guckenberger et al. Lancet Oncol 2020; 21: e18–2

1881

Digital Poster Radiology in Focus- A Survey of Imaging Modality Use in Oesophago-Gastric (OG) Cancer Evaluation and Target Volume Delineation (TVD) Nicholas A Gomez 1 , Kieran Foley 2,3 , Amy Case 1,4 , Betsan M Thomas 5 , David Watkins 1 , Owen Nicholas 1,4 , Sarah Gwynne 1,4 1 Oncology, South West Wales Cancer Centre, Swansea, United Kingdom. 2 School of Medicine, Cardiff University, Cardiff, United Kingdom. 3 Radiology, Velindre Cancer Centre, Cardiff, United Kingdom. 4 Faculty of Medicine, Health and Life Science, Swansea University, Swansea, United Kingdom. 5 Oncology, Velindre Cancer Centre, Cardiff, United Kingdom Purpose/Objective: We sought to determine the availability of PET-CT and EUS for staging and target volume delineation (TVD) and variation in reporting for oesophago-gastric (OG) cancer across the UK.

Material/Methods: A survey was sent to OG clinicians working in the UK.