[THE MAGIC OF IMMUNOTHERAPY - ANTI-PD1 TREATMENT IN ADENOCARCINOMA OF THE GASTROESOPHAGEAL JUNCTION].

Adenocarcinomas of the gastroesophageal junction (GEJ) are tumors whose incidence rates increased significantly in recent years. These tumors have a poor prognosis, and are treated with a palliative approach when diagnosed in an advanced stage. Some tumors overexpress PDL-1 proteins which are partially responsible for the "immune escape" of tumor cells.