Abstract
The incidence of esophagogastric junction (EGJ) adenocarcinoma is recently reported to increase worldwide. Operated cases of Siewert type II have been increasing in Japan based on the nation-wide survey, though its trend is unclear in the world. EGJ squamous cell carcinoma is treated as esophageal cancer. The surgical treatment for EGJ adenocarcinoma, especially for Siwert type II, still remains controversial. However, the results of the big data from Japan have shown that the lymph node dissection around the lower stomach is unnecessary during surgery for the EGJ cancer with the size of less than 4 cm. Total gastrectomy for the purpose of lymph node dissection is unnecessary. We have to wait for completion of ongoing prospective studies as for the significance of the inferior mediastinal lymph node dissection. The indications of endoscopic treatment of EGJ adenocarcinoma are regarded to follow those of gastric cancer.
