Fig. 1.

A A 12-mm trocar for assistant was placed at the 5th–7th intercostal space (ICS) in the midaxillary line. A 12-mm trocar for camera at the 6th ICS in the posterior axillary line. Two 8-mm trocars for instruments were inserted as below: third ICS in the midaxillary line for arm 1, 9th ICS in the scapula angle line for arm. B The intraoperative imagines of robot-assisted esophagectomy in dissecting lymph nodes along left recurrent laryngeal nerve. C A 12-mm observational port was created just on the left side of umbilicus. A 12-mm and a 5-mm trocar for assistant was placed at the right anterior axillary line below the costal arch and on the right side of umbilicus. Two 8-mm trocars for the instruments were inserted as below: robotic arm 1 was placed at the left anterior axillary line below the costal arch, robotic arm 2 was placed at the right midclavicular line, respectively. D The gastric tube of 3 cm wide was pulled up to the neck and a cervical anastomosis was constructed at the high point of the stomach using a circular stapler end to side