A novel surgical technique for dissection of Siewert typeⅡadenocarcinoma of the esophagogastric junction:the transthoracic single-port assisted laparoscopic esophagogastrostomy

Introduction The surgical approach for Siewert type II adenocarcinoma of the esophagogastric junction(AEG)is controversial.The JCOG9502 trial[1,2]has shown that the left thoracoabdominal approach has not improved the prognosis but increased the morbidity in patients with Siewert typeⅡorⅢAEG compared with the abdominal-transhiatal(TH)approach.However,lower mediastinum lymphadenectomy and digestive tract reconstruction using the laparoscopic TH approach are technically difficult[3].