- Carcinoma of the esophagogastric junction defined as adenocarcinoma involving esophagogastric junction when its epicenter is localized within 5cm proximally or 5cm distally to the anatomical esophagogastric junction with subclassification to 3 topographic types (type I between 5cm and 1cm above; type II between 1cm above and 2cm below; type III between 2cm and 5cm below anatomic junction of the esophagus and the stomach).