Robot-assisted laparoscopic partial nephrectomy: Early single Canadian institution experience

Area of Science:

• Urology
• Minimally Invasive Surgery
• Oncology

Background:

• Robot-assisted partial nephrectomy (RALPN) is gaining traction, yet open surgery remains the benchmark for nephron-sparing procedures.
• This study details the initial surgical outcomes of RALPN at a single institution.

Purpose of the Study:

• To evaluate the initial surgical outcomes of robot-assisted partial nephrectomy (RALPN).
• To assess the safety, feasibility, and early outcomes of RALPN for various renal masses.

Main Methods:

• Retrospective analysis of 65 consecutive RALPN cases performed by two surgeons between January 2011 and February 2013.
• Data collected included preoperative characteristics (R.E.N.A.L. nephrometry score), perioperative parameters, and postoperative outcomes (renal function, complications).
• Mean follow-up was 12 months.

Main Results:

• The mean patient age was 60.2 years, with a mean tumor size of 3.9 cm. Tumors were moderately (51%) and highly (18.5%) complex based on R.E.N.A.L. score.
• Median warm ischemia time (WIT) was 21 minutes, influenced by R.E.N.A.L. score, tumor size, complications, and surgeon experience.
• Overall complication rate was 24.6% (decreasing to 12% after 20 cases), with a trifecta rate of 64.3% for complex tumors after the initial learning curve. Mean eGFR change was -6.7 mL/min without severe renal failure.

Conclusions:

• RALPN is a safe and feasible nephron-sparing procedure for renal masses, including complex ones, with low morbidity.
• Warm ischemia time is linked to tumor complexity and surgeon experience, which improves over time.
• Further follow-up is necessary to confirm the long-term oncologic outcomes.