Retroperitoneal robot-assisted laparoscopic nephroureterectomy using the da Vinci Xi and SP systems: Initial experiences in cadaveric models.

The DVXi and DVSP systems are feasible for performing lateral decubitus and supine extraperitoneal RANU without patient repositioning. The lateral decubitus position may be better than the supine position, and the DVSP system is more suitable for retroperitoneal RANU than the DVXi system. Nevertheless, further studies should be performed in clinical settings to validate our results.