Abstract: The incidence of adenocarcinoma of the esophagogastric junction (AEG) is dramatically increasing worldwide, especially in western countries. Surgical resection remains the mainstay of potentially curative therapy for esophagogastric junction tumors. AEG has been a source of controversy in regard to the definition, classification, staging and surgical management. The definition of AEG was addressed with the development of the three tiered Siewert′s classification scheme. Siewert type Ⅰ AEG should be treated surgically as esophageal cancer, and right thoracic approach with a mediastinal lymph node dissection may be recommended, while Siewert type Ⅱ/Ⅲ AEG should be regarded as true gastric cancer, and a transhiatal extended gastrectomy is the preferable approach for Siewert type Ⅱ/Ⅲ AEG. Limited resections or endoscopic resection for earlier stage tumors have also been evaluated.