Single-Port Versus Multi-Port Robotic Retroperitoneal Partial Nephrectomy: A Propensity Score-Matched Comparison.

To compare the surgical results of retroperitoneal (RP) robot partial nephrectomy (PNx) using either a single-port robot (SP) or a multi-port robot (MP). We retrospectively reviewed all RP robotic PNx performed at a single institution from September 2021-when the SP robot was introduced to the institution-through April 2023. In total, 125 patients underwent the surgery; 81 patients were treated with surgery using a MP robot whereas 44 patients were treated with surgery using a SP. All MP surgeries were performed with da Vinci Xi (Intuitive, Sunnyvale, California, USA), while all SP surgeries were performed with da Vinci SP (Intuitive, Sunnyvale, California, USA). We performed a propensity score-matching (PSM) analysis of these 125 patients. There was no significant difference between the two groups after PSM. In terms of operation time, that for MP was 103.68 ± 21.89 minutes whereas that for SP was 95.43 ± 32.22 minutes (-value = 0.164). Meanwhile, in terms of console time, that for MP was 70.95 ± 21.92 minutes whereas that for SP was 64.14 ± 32.06 minutes (-value = 0.248). In terms of estimated blood loss was 90.91 ± 91.06 mL in MP and 92.27 ± 104.30 mL in SP (-value = 0.948). Lastly, there was a statistically significant difference in warm ischemic time, as it was 17.18 ± 6.56 minutes in MP and 13.82 ± 4.59 in SP (-value = 0.007). There were no statistically significant differences between MP and SP in any other surgical outcomes. SP robot RP PNx demonstrated comparable outcomes to those achieve using MP procedures. This means SP robot RP PNx can be considered a preferable and more convenient surgical approach than conventional methods, particularly when dealing with small renal masses located in the posterior side of the kidney.