Standardizing the treatment of oesophagogastric junction tumours: Centralization, registries and surgical training.

Surgical treatment of oesophagogastric junction adenocarcinomas is based on total gastrectomies or oesophagectomies, which are complex procedures with potentially high morbidity and mortality. Population-based registers show a considerable variability of protocols and outcomes among different hospitals and regions. One of the main strategies to improve global results is centralization at high-volume hospitals, a process that should take into account the benchmarking of processes and outcomes at referral hospitals. Minimally invasive surgery can improve postoperative morbidity while maintaining oncological guaranties, but is technically more demanding than open surgery. This fact underlines the need for structured training and mentorship programs that minimize the impact of surgical teams' training curves without affecting morbidity, mortality or oncologic radicality.