Inclusion Criteria:  Patients with histologically proven gastric and esophagogastric junction adenocarcinoma. Patients who have had (either) DLS and/or CT response assessment (after chemotherapy). Discussed at MDT from January 2016 - December 2018 ≥18 years  Exclusion Criteria:  Patients with esophagogastric junction adenocarcinoma with the tumour bulk located in the oesophagus that receive neoadjuvant chemoradiation; Patients with recurrent/residual disease after earlier treatment of gastric cancer.