Inclusion Criteria:  Patients referred with gastroesophageal adenocarcinoma to the Department of Surgery & Transplantation, Centre of Cancer and Organ Diseases, Rigshospitalet, and who are candidates for curatively intended surgery.  Exclusion Criteria:  Patients under the age of 18. Patients diagnosed with disseminated disease during surgery. Patients with impaired cognitive ability, making obtainment of informed consent impossible