[Diagnosis and management of gastro-esophageal junction tumor].

At the border between the esophagus and the stomach, gastro-esophageal junction tumors require a specific management that cannot be simplified to either of these two organs. Staging work-up with endoscopy, CT-Scan and PET-Scan, is essential because it will condition the choice of neo-adjuvant treatment. Surgery remains the only curative treatment and should be undergone in specialized center.