Neo-adjuvant radiochemotherapy for gastroesophageal junction cancer The incidence of gastroesophageal junction cancer is increasing in Chile. Adjuvant treatments with radiochemotherapy, improve the results of exclusive surgical treatment. There is evidence nowadays that preoperative concomitant radiochemotherapy improves surgical outcome without increasing surgical complications or mortality. Therefore results of surgery can be enhanced with perioperative treatments, preferably using neoadjuvant radiochemotherapy.