To summarize 6 cases of laparoscopic retroperitoneal lymph node dissection, and to explore the techniques and lessons of the operation.

All the patients were young men. After radical operation of testicular embryonic cancer, a robot-assisted laparoscopic hypogastric lymph node dissection was performed. The contralateral lateral decubitus position + mild jackknife position for surgery, observation hole located in the belly button, 3 robot operating arm and 2 assistant hole operation range for standard dissection, all retroperitoneal lymphes were removed.

The operations were successfully completed, with about 100-250 ml of intraoperative blood loss. Patients recovered well after operation. Metastasis of tumor lymph nodes was not found by postoperative pathology.

Robotic-assisted laparoscopic retroperitoneal lymph node dissection is relatively difficult. The choice of surgical position and puncture hole is critical to the success of surgery. The precise and flexible operation of robot system can significantly benefit patients, and the protection of sympathetic trunk, abdominal aorta and its branches, vena cava and its branches is better than that of general laparoscopy.